Merge pull request #5737 from lyen1688/feat/channel-time-pricing

功能：支持渠道模型分时倍率定价（支持峰谷定价）
2026-10-07 17:27:58 +08:00 · 2026-08-17 22:38:41 +08:00
parent ab28a2d10b 6bf335965a
commit 5253bb72b0
41 changed files with 2298 additions and 132 deletions
@@ -57,17 +57,29 @@ type updateChannelRequest struct {
 }

 type channelModelPricingRequest struct {
-	Platform         string                   `json:"platform" binding:"omitempty,max=50"`
-	Models           []string                 `json:"models" binding:"required,min=1,max=100"`
-	BillingMode      string                   `json:"billing_mode" binding:"omitempty,oneof=token per_request image"`
-	InputPrice       *float64                 `json:"input_price" binding:"omitempty,min=0"`
-	OutputPrice      *float64                 `json:"output_price" binding:"omitempty,min=0"`
-	CacheWritePrice  *float64                 `json:"cache_write_price" binding:"omitempty,min=0"`
-	CacheReadPrice   *float64                 `json:"cache_read_price" binding:"omitempty,min=0"`
-	ImageInputPrice  *float64                 `json:"image_input_price" binding:"omitempty,min=0"`
-	ImageOutputPrice *float64                 `json:"image_output_price" binding:"omitempty,min=0"`
-	PerRequestPrice  *float64                 `json:"per_request_price" binding:"omitempty,min=0"`
-	Intervals        []pricingIntervalRequest `json:"intervals"`
+	Platform         string                     `json:"platform" binding:"omitempty,max=50"`
+	Models           []string                   `json:"models" binding:"required,min=1,max=100"`
+	BillingMode      string                     `json:"billing_mode" binding:"omitempty,oneof=token per_request image"`
+	InputPrice       *float64                   `json:"input_price" binding:"omitempty,min=0"`
+	OutputPrice      *float64                   `json:"output_price" binding:"omitempty,min=0"`
+	CacheWritePrice  *float64                   `json:"cache_write_price" binding:"omitempty,min=0"`
+	CacheReadPrice   *float64                   `json:"cache_read_price" binding:"omitempty,min=0"`
+	ImageInputPrice  *float64                   `json:"image_input_price" binding:"omitempty,min=0"`
+	ImageOutputPrice *float64                   `json:"image_output_price" binding:"omitempty,min=0"`
+	PerRequestPrice  *float64                   `json:"per_request_price" binding:"omitempty,min=0"`
+	Intervals        []pricingIntervalRequest   `json:"intervals"`
+	TimePricing      *channelTimePricingRequest `json:"time_pricing"`
+}
+
+type channelTimePricingRequest struct {
+	Timezone string                            `json:"timezone"`
+	Periods  []channelTimePricingPeriodRequest `json:"periods"`
+}
+
+type channelTimePricingPeriodRequest struct {
+	StartTime  string  `json:"start_time"`
+	EndTime    string  `json:"end_time"`
+	Multiplier float64 `json:"multiplier"`
 }

 type pricingIntervalRequest struct {
@@ -108,18 +120,30 @@ type channelResponse struct {
 }

 type channelModelPricingResponse struct {
-	ID               int64                     `json:"id"`
-	Platform         string                    `json:"platform"`
-	Models           []string                  `json:"models"`
-	BillingMode      string                    `json:"billing_mode"`
-	InputPrice       *float64                  `json:"input_price"`
-	OutputPrice      *float64                  `json:"output_price"`
-	CacheWritePrice  *float64                  `json:"cache_write_price"`
-	CacheReadPrice   *float64                  `json:"cache_read_price"`
-	ImageInputPrice  *float64                  `json:"image_input_price"`
-	ImageOutputPrice *float64                  `json:"image_output_price"`
-	PerRequestPrice  *float64                  `json:"per_request_price"`
-	Intervals        []pricingIntervalResponse `json:"intervals"`
+	ID               int64                       `json:"id"`
+	Platform         string                      `json:"platform"`
+	Models           []string                    `json:"models"`
+	BillingMode      string                      `json:"billing_mode"`
+	InputPrice       *float64                    `json:"input_price"`
+	OutputPrice      *float64                    `json:"output_price"`
+	CacheWritePrice  *float64                    `json:"cache_write_price"`
+	CacheReadPrice   *float64                    `json:"cache_read_price"`
+	ImageInputPrice  *float64                    `json:"image_input_price"`
+	ImageOutputPrice *float64                    `json:"image_output_price"`
+	PerRequestPrice  *float64                    `json:"per_request_price"`
+	Intervals        []pricingIntervalResponse   `json:"intervals"`
+	TimePricing      *channelTimePricingResponse `json:"time_pricing"`
+}
+
+type channelTimePricingResponse struct {
+	Timezone string                             `json:"timezone"`
+	Periods  []channelTimePricingPeriodResponse `json:"periods"`
+}
+
+type channelTimePricingPeriodResponse struct {
+	StartTime  string  `json:"start_time"`
+	EndTime    string  `json:"end_time"`
+	Multiplier float64 `json:"multiplier"`
 }

 type pricingIntervalResponse struct {
@@ -228,9 +252,25 @@ func pricingToResponse(p *service.ChannelModelPricing) channelModelPricingRespon
 		ImageOutputPrice: p.ImageOutputPrice,
 		PerRequestPrice:  p.PerRequestPrice,
 		Intervals:        intervals,
+		TimePricing:      timePricingToResponse(p.TimePricing),
 	}
 }

+func timePricingToResponse(value *service.ChannelTimePricing) *channelTimePricingResponse {
+	if value == nil {
+		return nil
+	}
+	periods := make([]channelTimePricingPeriodResponse, 0, len(value.Periods))
+	for _, period := range value.Periods {
+		periods = append(periods, channelTimePricingPeriodResponse{
+			StartTime:  period.StartTime,
+			EndTime:    period.EndTime,
+			Multiplier: period.Multiplier,
+		})
+	}
+	return &channelTimePricingResponse{Timezone: value.Timezone, Periods: periods}
+}
+
 func intervalToResponse(iv service.PricingInterval) pricingIntervalResponse {
 	return pricingIntervalResponse{
 		ID:              iv.ID,
@@ -280,11 +320,27 @@ func pricingRequestToService(reqs []channelModelPricingRequest) []service.Channe
 			ImageOutputPrice: r.ImageOutputPrice,
 			PerRequestPrice:  r.PerRequestPrice,
 			Intervals:        intervals,
+			TimePricing:      timePricingRequestToService(r.TimePricing),
 		})
 	}
 	return result
 }

+func timePricingRequestToService(value *channelTimePricingRequest) *service.ChannelTimePricing {
+	if value == nil {
+		return nil
+	}
+	periods := make([]service.ChannelTimePricingPeriod, 0, len(value.Periods))
+	for _, period := range value.Periods {
+		periods = append(periods, service.ChannelTimePricingPeriod{
+			StartTime:  period.StartTime,
+			EndTime:    period.EndTime,
+			Multiplier: period.Multiplier,
+		})
+	}
+	return &service.ChannelTimePricing{Timezone: value.Timezone, Periods: periods}
+}
+
 func accountStatsPricingRuleRequestToService(r accountStatsPricingRuleRequest) service.AccountStatsPricingRule {
 	return service.AccountStatsPricingRule{
 		Name:       r.Name,
@@ -421,6 +421,49 @@ func TestPricingRequestToService_NilPriceFields(t *testing.T) {
 	require.Nil(t, r.PerRequestPrice)
 }

+func TestPricingRequestToService_TimePricing(t *testing.T) {
+	req := channelModelPricingRequest{
+		Models:      []string{"gpt-5"},
+		BillingMode: "token",
+		TimePricing: &channelTimePricingRequest{
+			Timezone: "Asia/Shanghai",
+			Periods: []channelTimePricingPeriodRequest{{
+				StartTime: "09:00", EndTime: "12:00", Multiplier: 2,
+			}},
+		},
+	}
+
+	got := pricingRequestToService([]channelModelPricingRequest{req})
+	require.Equal(t, "Asia/Shanghai", got[0].TimePricing.Timezone)
+	require.Equal(t, 2.0, got[0].TimePricing.Periods[0].Multiplier)
+}
+
+func TestPricingRequestToService_TimePricingNil(t *testing.T) {
+	got := pricingRequestToService([]channelModelPricingRequest{{Models: []string{"gpt-5"}}})
+	require.Nil(t, got[0].TimePricing)
+}
+
+func TestPricingToResponse_TimePricing(t *testing.T) {
+	got := pricingToResponse(&service.ChannelModelPricing{
+		BillingMode: service.BillingModeToken,
+		TimePricing: &service.ChannelTimePricing{
+			Timezone: "Asia/Shanghai",
+			Periods: []service.ChannelTimePricingPeriod{{
+				StartTime: "14:00", EndTime: "18:00", Multiplier: 1.25,
+			}},
+		},
+	})
+
+	require.NotNil(t, got.TimePricing)
+	require.Equal(t, "Asia/Shanghai", got.TimePricing.Timezone)
+	require.Equal(t, 1.25, got.TimePricing.Periods[0].Multiplier)
+}
+
+func TestPricingToResponse_TimePricingNil(t *testing.T) {
+	got := pricingToResponse(&service.ChannelModelPricing{})
+	require.Nil(t, got.TimePricing)
+}
+
 // ---------------------------------------------------------------------------
 // 3. SyncPricingModels handler
 // ---------------------------------------------------------------------------
@@ -1446,12 +1446,10 @@ const (
 // 由 BeforeTurn 在每个 turn 开始时冻结，AfterTurn 的用量提交读取它；turn 在
 // 连接内串行推进，互斥锁只为跨用量提交 goroutine 的读取安全。
 //
-// 零值语义（重要）：ws_v2 passthrough ingress 只实现了 AfterTurn，没有任何
-// turn 起始回调，BeforeTurn 永远不会被调用。此时本值保持零，RecordUsage 经
-// openAIUsagePricingAt 回退到记录时刻——与引入分组利润控制前的基线一致。
-// 绝不能用建连时刻初始化：那会把透传连接的所有 turn 钉死在建连时的高峰因子，
-// 客户端只要峰前一分钟建连并保活，整条连接就能全程按谷价结算，正是利润控制
-// 想堵的漏洞。透传 ingress 目前不做 turn 级利润复核，只有建连时的准入门。
+// ws_v2 passthrough ingress 没有 BeforeTurn，因此本值会保持零；AfterTurn 必须
+// 以 TurnStarted 已记录的所属 turn 开始时刻为回退，而不是用建连或记录时刻。
+// 这样每个 passthrough turn 都按自己的开始时刻计价，但不改变其仅在建连时执行
+// 准入门、没有 turn 级利润复核的既有行为。
 type openAIWSTurnPricing struct {
 	mu sync.Mutex
 	at time.Time
@@ -1463,10 +1461,13 @@ func (p *openAIWSTurnPricing) freeze(at time.Time) {
 	p.mu.Unlock()
 }

-func (p *openAIWSTurnPricing) current() time.Time {
+func (p *openAIWSTurnPricing) currentOr(fallback time.Time) time.Time {
 	p.mu.Lock()
 	defer p.mu.Unlock()
-	return p.at
+	if !p.at.IsZero() {
+		return p.at
+	}
+	return fallback
 }

 // recordOpenAIProfitVeto 记录 OpenAI 侧选号循环的一次利润门终检否决：把账号
@@ -1729,6 +1730,7 @@ func (h *OpenAIGatewayHandler) ResponsesWebSocket(c *gin.Context) {
 		closeOpenAIClientWS(wsConn, coderws.StatusPolicyViolation, "missing first response.create message")
 		return
 	}
+	firstTurnStartedAt := time.Now()
 	if msgType != coderws.MessageText && msgType != coderws.MessageBinary {
 		closeOpenAIClientWS(wsConn, coderws.StatusPolicyViolation, "unsupported websocket message type")
 		return
@@ -2057,19 +2059,37 @@ func (h *OpenAIGatewayHandler) ResponsesWebSocket(c *gin.Context) {

 		maxReasoningEffort, reasoningEffortMappings, _ := openAIReasoningEffortPolicyForRequest(c, apiKey)
 		var requestPayloadHash string
+		var turnStartsMu sync.Mutex
+		turnStarts := make(map[int]time.Time, 4)
+		recordTurnStart := func(turn int, startedAt time.Time) {
+			if turn <= 0 || startedAt.IsZero() {
+				return
+			}
+			turnStartsMu.Lock()
+			turnStarts[turn] = startedAt
+			turnStartsMu.Unlock()
+		}
+		getTurnStart := func(turn int) time.Time {
+			turnStartsMu.Lock()
+			startedAt := turnStarts[turn]
+			delete(turnStarts, turn)
+			turnStartsMu.Unlock()
+			return startedAt
+		}
 		// Passthrough rejects overlapping response.create frames, so one immutable
 		// turn-tagged slot preserves the exact mapping used for the in-flight request.
 		var turnChannelMapping atomic.Pointer[openAIWSTurnChannelMappingSnapshot]
 		turnChannelMapping.Store(&openAIWSTurnChannelMappingSnapshot{turn: 1, mapping: channelMappingWS})
-		// turn 级定价：BeforeTurn 重新冻结 pricingAt 并按最新门复核当前账号，
-		// AfterTurn 的计费读取所属 turn 的时刻。零值起步的语义见
-		// openAIWSTurnPricing 的注释——绝不能用建连时刻初始化。
+		// turn 级定价：BeforeTurn 重新冻结 pricingAt 并按最新门复核当前账号；
+		// passthrough 没有 BeforeTurn 时，AfterTurn 回退到 TurnStarted 的所属 turn 时刻。
 		var turnPricing openAIWSTurnPricing
 		hooks := &service.OpenAIWSIngressHooks{
 			ClientLifecycleContext:  clientLifecycleCtx,
 			InitialRequestModel:     reqModel,
+			InitialTurnStartedAt:    firstTurnStartedAt,
 			MaxReasoningEffort:      maxReasoningEffort,
 			ReasoningEffortMappings: reasoningEffortMappings,
+			TurnStarted:             recordTurnStart,
 			BeforeRequest: func(turn int, payload []byte, originalModel string) error {
 				c.Set(securityAuditWSTurnContextKey, turn)
 				if turn == 1 {
@@ -2155,6 +2175,7 @@ func (h *OpenAIGatewayHandler) ResponsesWebSocket(c *gin.Context) {
 				return nil
 			},
 			AfterTurn: func(turn int, result *service.OpenAIForwardResult, turnErr error) {
+				turnStart := getTurnStart(turn)
 				// F1: cyber 标记按 turn 生命周期清理——defer 保证任意早返回路径都执行；
 				// CyberBlocked 必须在 submit 前同步预捕获（task 闭包由 worker 池异步执行，
 				// 届时 defer 已清除标记）。
@@ -2222,7 +2243,7 @@ func (h *OpenAIGatewayHandler) ResponsesWebSocket(c *gin.Context) {
 				upstreamEndpoint := resolveOpenAIUpstreamEndpoint(c, account, result)
 				quotaPlatform := service.QuotaPlatform(c.Request.Context(), apiKey)
 				sessionID := service.ExtractClientSessionID(c)
-				turnRecordPricingAt := turnPricing.current()
+				turnRecordPricingAt := turnPricing.currentOr(turnStart)
 				cyberBlocked := service.GetOpsCyberPolicy(c) != nil
 				h.submitOpenAIUsageRecordTask(ctx, result, func(taskCtx context.Context) {
 					if err := h.gatewayService.RecordUsage(taskCtx, &service.OpenAIRecordUsageInput{
@@ -7,16 +7,20 @@ import (
 	"github.com/stretchr/testify/require"
 )

-// TestOpenAIWSTurnPricingZeroValue 钉死 WS turn 定价的零值语义：
-// 没有 turn 起始回调的 ingress 模式（ws_v2 passthrough 只实现 AfterTurn）
-// 必须让 pricingAt 保持零，由 RecordUsage 回退到记录时刻。
-//
-// 反例（本 PR 引入的回归）：用建连时刻初始化，会把透传连接的所有 turn 钉死在
-// 建连时的高峰因子——客户端峰前一分钟建连并保活，整条连接就按谷价结算。
-func TestOpenAIWSTurnPricingZeroValue(t *testing.T) {
-	var p openAIWSTurnPricing
-	require.True(t, p.current().IsZero(),
-		"未经 turn 起始回调冻结时必须保持零值，交由 RecordUsage 回退记录时刻")
+func TestOpenAIWSTurnPricingCurrentOr(t *testing.T) {
+	fallback := time.Date(2024, time.January, 2, 2, 0, 0, 0, time.UTC)
+
+	t.Run("frozen time takes precedence", func(t *testing.T) {
+		frozen := fallback.Add(time.Minute)
+		var p openAIWSTurnPricing
+		p.freeze(frozen)
+		require.Equal(t, frozen, p.currentOr(fallback))
+	})
+
+	t.Run("zero value falls back to turn start", func(t *testing.T) {
+		var p openAIWSTurnPricing
+		require.Equal(t, fallback, p.currentOr(fallback))
+	})
 }

 // TestOpenAIWSTurnPricingFreezePerTurn 钉死每个 turn 的 BeforeTurn 都会覆盖
@@ -27,8 +31,8 @@ func TestOpenAIWSTurnPricingFreezePerTurn(t *testing.T) {
 	turn2 := time.Now()

 	p.freeze(turn1)
-	require.Equal(t, turn1, p.current())
+	require.Equal(t, turn1, p.currentOr(time.Time{}))

 	p.freeze(turn2)
-	require.Equal(t, turn2, p.current(), "后续 turn 必须使用自己的定价时刻")
+	require.Equal(t, turn2, p.currentOr(time.Time{}), "后续 turn 必须使用自己的定价时刻")
 }
@@ -16,7 +16,7 @@ import (

 func (r *channelRepository) ListModelPricing(ctx context.Context, channelID int64) ([]service.ChannelModelPricing, error) {
 	rows, err := r.db.QueryContext(ctx,
-		`SELECT id, channel_id, platform, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_input_price, image_output_price, per_request_price, created_at, updated_at
+		`SELECT id, channel_id, platform, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_input_price, image_output_price, per_request_price, time_pricing, created_at, updated_at
 		 FROM channel_model_pricing WHERE channel_id = $1 ORDER BY id`, channelID,
 	)
 	if err != nil {
@@ -51,16 +51,20 @@ func (r *channelRepository) UpdateModelPricing(ctx context.Context, pricing *ser
 	if err != nil {
 		return fmt.Errorf("marshal models: %w", err)
 	}
+	timePricingJSON, err := marshalChannelTimePricing(pricing.TimePricing)
+	if err != nil {
+		return err
+	}
 	billingMode := pricing.BillingMode
 	if billingMode == "" {
 		billingMode = service.BillingModeToken
 	}
 	result, err := r.db.ExecContext(ctx,
 		`UPDATE channel_model_pricing
-		 SET models = $1, billing_mode = $2, input_price = $3, output_price = $4, cache_write_price = $5, cache_read_price = $6, image_input_price = $7, image_output_price = $8, per_request_price = $9, platform = $10, updated_at = NOW()
-		 WHERE id = $11`,
+		 SET models = $1, billing_mode = $2, input_price = $3, output_price = $4, cache_write_price = $5, cache_read_price = $6, image_input_price = $7, image_output_price = $8, per_request_price = $9, time_pricing = $10, platform = $11, updated_at = NOW()
+		 WHERE id = $12`,
 		modelsJSON, billingMode, pricing.InputPrice, pricing.OutputPrice, pricing.CacheWritePrice, pricing.CacheReadPrice,
-		pricing.ImageInputPrice, pricing.ImageOutputPrice, pricing.PerRequestPrice, pricing.Platform, pricing.ID,
+		pricing.ImageInputPrice, pricing.ImageOutputPrice, pricing.PerRequestPrice, timePricingJSON, pricing.Platform, pricing.ID,
 	)
 	if err != nil {
 		return fmt.Errorf("update model pricing: %w", err)
@@ -91,7 +95,7 @@ func (r *channelRepository) ReplaceModelPricing(ctx context.Context, channelID i
 // batchLoadModelPricing 批量加载多个渠道的模型定价（含区间）
 func (r *channelRepository) batchLoadModelPricing(ctx context.Context, channelIDs []int64) (map[int64][]service.ChannelModelPricing, error) {
 	rows, err := r.db.QueryContext(ctx,
-		`SELECT id, channel_id, platform, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_input_price, image_output_price, per_request_price, created_at, updated_at
+		`SELECT id, channel_id, platform, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_input_price, image_output_price, per_request_price, time_pricing, created_at, updated_at
 		 FROM channel_model_pricing WHERE channel_id = ANY($1) ORDER BY channel_id, id`,
 		pq.Array(channelIDs),
 	)
@@ -169,16 +173,22 @@ func scanModelPricingRows(rows *sql.Rows) ([]service.ChannelModelPricing, []int6
 	for rows.Next() {
 		var p service.ChannelModelPricing
 		var modelsJSON []byte
+		var timePricingJSON []byte
 		if err := rows.Scan(
 			&p.ID, &p.ChannelID, &p.Platform, &modelsJSON, &p.BillingMode,
 			&p.InputPrice, &p.OutputPrice, &p.CacheWritePrice, &p.CacheReadPrice,
-			&p.ImageInputPrice, &p.ImageOutputPrice, &p.PerRequestPrice, &p.CreatedAt, &p.UpdatedAt,
+			&p.ImageInputPrice, &p.ImageOutputPrice, &p.PerRequestPrice, &timePricingJSON, &p.CreatedAt, &p.UpdatedAt,
 		); err != nil {
 			return nil, nil, fmt.Errorf("scan model pricing: %w", err)
 		}
 		if err := json.Unmarshal(modelsJSON, &p.Models); err != nil {
 			p.Models = []string{}
 		}
+		timePricing, err := unmarshalChannelTimePricing(timePricingJSON)
+		if err != nil {
+			return nil, nil, err
+		}
+		p.TimePricing = timePricing
 		pricingIDs = append(pricingIDs, p.ID)
 		result = append(result, p)
 	}
@@ -220,6 +230,10 @@ func createModelPricingExec(ctx context.Context, exec dbExec, pricing *service.C
 	if err != nil {
 		return fmt.Errorf("marshal models: %w", err)
 	}
+	timePricingJSON, err := marshalChannelTimePricing(pricing.TimePricing)
+	if err != nil {
+		return err
+	}
 	billingMode := pricing.BillingMode
 	if billingMode == "" {
 		billingMode = service.BillingModeToken
@@ -229,11 +243,11 @@ func createModelPricingExec(ctx context.Context, exec dbExec, pricing *service.C
 		platform = "anthropic"
 	}
 	err = exec.QueryRowContext(ctx,
-		`INSERT INTO channel_model_pricing (channel_id, platform, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_input_price, image_output_price, per_request_price)
-		 VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11) RETURNING id, created_at, updated_at`,
+		`INSERT INTO channel_model_pricing (channel_id, platform, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_input_price, image_output_price, per_request_price, time_pricing)
+		 VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12) RETURNING id, created_at, updated_at`,
 		pricing.ChannelID, platform, modelsJSON, billingMode,
 		pricing.InputPrice, pricing.OutputPrice, pricing.CacheWritePrice, pricing.CacheReadPrice,
-		pricing.ImageInputPrice, pricing.ImageOutputPrice, pricing.PerRequestPrice,
+		pricing.ImageInputPrice, pricing.ImageOutputPrice, pricing.PerRequestPrice, timePricingJSON,
 	).Scan(&pricing.ID, &pricing.CreatedAt, &pricing.UpdatedAt)
 	if err != nil {
 		return fmt.Errorf("insert model pricing: %w", err)
@@ -249,6 +263,28 @@ func createModelPricingExec(ctx context.Context, exec dbExec, pricing *service.C
 	return nil
 }

+func marshalChannelTimePricing(config *service.ChannelTimePricing) (any, error) {
+	if config == nil || len(config.Periods) == 0 {
+		return nil, nil
+	}
+	data, err := json.Marshal(config)
+	if err != nil {
+		return nil, fmt.Errorf("marshal time pricing: %w", err)
+	}
+	return string(data), nil
+}
+
+func unmarshalChannelTimePricing(data []byte) (*service.ChannelTimePricing, error) {
+	if len(data) == 0 {
+		return nil, nil
+	}
+	var config service.ChannelTimePricing
+	if err := json.Unmarshal(data, &config); err != nil {
+		return nil, fmt.Errorf("unmarshal time pricing: %w", err)
+	}
+	return &config, nil
+}
+
 func createIntervalExec(ctx context.Context, exec dbExec, iv *service.PricingInterval) error {
 	return exec.QueryRowContext(ctx,
 		`INSERT INTO channel_pricing_intervals
@@ -0,0 +1,181 @@
+//go:build unit
+
+package repository
+
+import (
+	"context"
+	"regexp"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/DATA-DOG/go-sqlmock"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/stretchr/testify/require"
+)
+
+var channelModelPricingTimePricingColumns = []string{
+	"id", "channel_id", "platform", "models", "billing_mode", "input_price", "output_price",
+	"cache_write_price", "cache_read_price", "image_input_price", "image_output_price",
+	"per_request_price", "time_pricing", "created_at", "updated_at",
+}
+
+const channelModelPricingTimePricingJSON = `{"timezone":"Asia/Shanghai","periods":[{"start_time":"09:00","end_time":"12:00","multiplier":2}]}`
+
+func newChannelModelPricingTimePricingRepo(t *testing.T) (*channelRepository, sqlmock.Sqlmock) {
+	t.Helper()
+	db, mock, err := sqlmock.New()
+	require.NoError(t, err)
+	t.Cleanup(func() { _ = db.Close() })
+	return &channelRepository{db: db}, mock
+}
+
+func modelPricingTimePricingRow(timePricing any) *sqlmock.Rows {
+	return sqlmock.NewRows(channelModelPricingTimePricingColumns).AddRow(
+		int64(11), int64(7), "openai", `["gpt-5"]`, service.BillingModeToken,
+		nil, nil, nil, nil, nil, nil, nil, timePricing,
+		time.Date(2026, 8, 17, 0, 0, 0, 0, time.UTC), time.Date(2026, 8, 17, 1, 0, 0, 0, time.UTC),
+	)
+}
+
+func expectEmptyModelPricingIntervals(mock sqlmock.Sqlmock) {
+	mock.ExpectQuery(`SELECT id, pricing_id, min_tokens, max_tokens, tier_label`).
+		WithArgs(sqlmock.AnyArg()).
+		WillReturnRows(sqlmock.NewRows([]string{"id"}))
+}
+
+func TestChannelModelPricingTimePricingListRoundTrip(t *testing.T) {
+	repo, mock := newChannelModelPricingTimePricingRepo(t)
+	mock.ExpectQuery(`(?s)SELECT .*per_request_price, time_pricing, created_at, updated_at.*FROM channel_model_pricing.*channel_id = \$1`).
+		WithArgs(int64(7)).
+		WillReturnRows(modelPricingTimePricingRow(channelModelPricingTimePricingJSON))
+	expectEmptyModelPricingIntervals(mock)
+
+	pricing, err := repo.ListModelPricing(context.Background(), 7)
+	require.NoError(t, err)
+	require.Len(t, pricing, 1)
+	require.NotNil(t, pricing[0].TimePricing)
+	require.Equal(t, "Asia/Shanghai", pricing[0].TimePricing.Timezone)
+	require.Len(t, pricing[0].TimePricing.Periods, 1)
+	require.Equal(t, 2.0, pricing[0].TimePricing.Periods[0].Multiplier)
+	require.NoError(t, mock.ExpectationsWereMet())
+}
+
+func TestChannelModelPricingTimePricingListNullAndMalformed(t *testing.T) {
+	t.Run("SQL NULL maps to nil", func(t *testing.T) {
+		repo, mock := newChannelModelPricingTimePricingRepo(t)
+		mock.ExpectQuery(`(?s)SELECT .*per_request_price, time_pricing, created_at, updated_at.*FROM channel_model_pricing.*channel_id = \$1`).
+			WithArgs(int64(7)).
+			WillReturnRows(modelPricingTimePricingRow(nil))
+		expectEmptyModelPricingIntervals(mock)
+
+		pricing, err := repo.ListModelPricing(context.Background(), 7)
+		require.NoError(t, err)
+		require.Len(t, pricing, 1)
+		require.Nil(t, pricing[0].TimePricing)
+		require.NoError(t, mock.ExpectationsWereMet())
+	})
+
+	t.Run("malformed JSON returns repository error", func(t *testing.T) {
+		repo, mock := newChannelModelPricingTimePricingRepo(t)
+		mock.ExpectQuery(`(?s)SELECT .*per_request_price, time_pricing, created_at, updated_at.*FROM channel_model_pricing.*channel_id = \$1`).
+			WithArgs(int64(7)).
+			WillReturnRows(modelPricingTimePricingRow(`{"timezone":`))
+
+		_, err := repo.ListModelPricing(context.Background(), 7)
+		require.Error(t, err)
+		require.True(t, strings.Contains(err.Error(), "unmarshal time pricing"), "unexpected error: %v", err)
+		require.NoError(t, mock.ExpectationsWereMet())
+	})
+}
+
+func TestChannelModelPricingTimePricingCreateAndUpdateRoundTrip(t *testing.T) {
+	pricing := &service.ChannelModelPricing{
+		ID:        11,
+		ChannelID: 7,
+		Platform:  "openai",
+		Models:    []string{"gpt-5"},
+		TimePricing: &service.ChannelTimePricing{
+			Timezone: "Asia/Shanghai",
+			Periods: []service.ChannelTimePricingPeriod{{
+				StartTime: "09:00", EndTime: "12:00", Multiplier: 2,
+			}},
+		},
+	}
+
+	t.Run("create writes JSON", func(t *testing.T) {
+		repo, mock := newChannelModelPricingTimePricingRepo(t)
+		mock.ExpectQuery(regexp.QuoteMeta("INSERT INTO channel_model_pricing (channel_id, platform, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_input_price, image_output_price, per_request_price, time_pricing)")).
+			WithArgs(
+				int64(7), "openai", []byte(`["gpt-5"]`), service.BillingModeToken,
+				nil, nil, nil, nil, nil, nil, nil, channelModelPricingTimePricingJSON,
+			).
+			WillReturnRows(sqlmock.NewRows([]string{"id", "created_at", "updated_at"}).AddRow(int64(11), time.Time{}, time.Time{}))
+
+		require.NoError(t, repo.CreateModelPricing(context.Background(), pricing))
+		require.NoError(t, mock.ExpectationsWereMet())
+	})
+
+	t.Run("update writes JSON and entry ID", func(t *testing.T) {
+		repo, mock := newChannelModelPricingTimePricingRepo(t)
+		mock.ExpectExec(`(?s)UPDATE channel_model_pricing.*per_request_price = \$9, time_pricing = \$10, platform = \$11.*WHERE id = \$12`).
+			WithArgs(
+				[]byte(`["gpt-5"]`), service.BillingModeToken,
+				nil, nil, nil, nil, nil, nil, nil, channelModelPricingTimePricingJSON, "openai", int64(11),
+			).
+			WillReturnResult(sqlmock.NewResult(0, 1))
+
+		require.NoError(t, repo.UpdateModelPricing(context.Background(), pricing))
+		require.NoError(t, mock.ExpectationsWereMet())
+	})
+}
+
+func TestChannelModelPricingTimePricingCreateAndUpdateWriteNullWhenDisabled(t *testing.T) {
+	tests := []struct {
+		name        string
+		timePricing *service.ChannelTimePricing
+	}{
+		{name: "nil", timePricing: nil},
+		{name: "empty periods", timePricing: &service.ChannelTimePricing{Timezone: "Asia/Shanghai"}},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			newPricing := func() *service.ChannelModelPricing {
+				return &service.ChannelModelPricing{
+					ID:          11,
+					ChannelID:   7,
+					Platform:    "openai",
+					Models:      []string{"gpt-5"},
+					TimePricing: tt.timePricing,
+				}
+			}
+
+			t.Run("create writes SQL NULL", func(t *testing.T) {
+				repo, mock := newChannelModelPricingTimePricingRepo(t)
+				mock.ExpectQuery(regexp.QuoteMeta("INSERT INTO channel_model_pricing (channel_id, platform, models, billing_mode, input_price, output_price, cache_write_price, cache_read_price, image_input_price, image_output_price, per_request_price, time_pricing)")).
+					WithArgs(
+						int64(7), "openai", []byte(`["gpt-5"]`), service.BillingModeToken,
+						nil, nil, nil, nil, nil, nil, nil, nil,
+					).
+					WillReturnRows(sqlmock.NewRows([]string{"id", "created_at", "updated_at"}).AddRow(int64(11), time.Time{}, time.Time{}))
+
+				require.NoError(t, repo.CreateModelPricing(context.Background(), newPricing()))
+				require.NoError(t, mock.ExpectationsWereMet())
+			})
+
+			t.Run("update writes SQL NULL", func(t *testing.T) {
+				repo, mock := newChannelModelPricingTimePricingRepo(t)
+				mock.ExpectExec(`(?s)UPDATE channel_model_pricing.*per_request_price = \$9, time_pricing = \$10, platform = \$11.*WHERE id = \$12`).
+					WithArgs(
+						[]byte(`["gpt-5"]`), service.BillingModeToken,
+						nil, nil, nil, nil, nil, nil, nil, nil, "openai", int64(11),
+					).
+					WillReturnResult(sqlmock.NewResult(0, 1))
+
+				require.NoError(t, repo.UpdateModelPricing(context.Background(), newPricing()))
+				require.NoError(t, mock.ExpectationsWereMet())
+			})
+		})
+	}
+}
@@ -987,6 +987,12 @@ func normalizeGroupModelPricing(platform string, pricing []ChannelModelPricing)
 		out[i] = pricing[i].Clone()
 		out[i].ID = 0
 		out[i].ChannelID = 0
+		if out[i].TimePricing != nil && len(out[i].TimePricing.Periods) > 0 {
+			return nil, infraerrors.BadRequest(
+				"GROUP_MODEL_TIME_PRICING_UNSUPPORTED",
+				"group model pricing does not support time pricing",
+			)
+		}
 		if strings.TrimSpace(out[i].Platform) == "" {
 			out[i].Platform = platform
 		}
@@ -4,8 +4,10 @@ package service

 import (
 	"context"
+	"net/http"
 	"testing"

+	infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 	"github.com/stretchr/testify/require"
 )
@@ -156,6 +158,61 @@ func (s *groupRepoStubForAdmin) UpdateSortOrders(_ context.Context, _ []GroupSor
 	return nil
 }

+func TestAdminService_CreateGroup_RejectsTimePricing(t *testing.T) {
+	repo := &groupRepoStubForAdmin{createID: 51}
+	svc := &adminServiceImpl{groupRepo: repo}
+
+	_, err := svc.CreateGroup(context.Background(), &CreateGroupInput{
+		Name:           "time-pricing-group",
+		Platform:       PlatformOpenAI,
+		RateMultiplier: 1,
+		ModelPricing: []ChannelModelPricing{{
+			Platform:    PlatformOpenAI,
+			Models:      []string{"gpt-5"},
+			BillingMode: BillingModeToken,
+			TimePricing: validTimePricingForTest(),
+		}},
+	})
+
+	require.Error(t, err)
+	appErr := infraerrors.FromError(err)
+	require.Equal(t, int32(http.StatusBadRequest), appErr.Code)
+	require.Equal(t, "GROUP_MODEL_TIME_PRICING_UNSUPPORTED", appErr.Reason)
+	require.Nil(t, repo.created)
+}
+
+func TestAdminService_UpdateGroup_RejectsTimePricing(t *testing.T) {
+	existing := &Group{ID: 1, Name: "existing", Platform: PlatformOpenAI, Status: StatusActive}
+	repo := &groupRepoStubForAdmin{getByID: existing}
+	svc := &adminServiceImpl{groupRepo: repo}
+	pricing := []ChannelModelPricing{{
+		Platform:    PlatformOpenAI,
+		Models:      []string{"gpt-5"},
+		BillingMode: BillingModeToken,
+		TimePricing: validTimePricingForTest(),
+	}}
+
+	_, err := svc.UpdateGroup(context.Background(), existing.ID, &UpdateGroupInput{ModelPricing: &pricing})
+
+	require.Error(t, err)
+	appErr := infraerrors.FromError(err)
+	require.Equal(t, int32(http.StatusBadRequest), appErr.Code)
+	require.Equal(t, "GROUP_MODEL_TIME_PRICING_UNSUPPORTED", appErr.Reason)
+	require.Nil(t, repo.updated)
+}
+
+func TestNormalizeGroupModelPricing_NormalizesEmptyTimePricing(t *testing.T) {
+	pricing, err := normalizeGroupModelPricing(PlatformOpenAI, []ChannelModelPricing{{
+		Models:      []string{"gpt-5"},
+		BillingMode: BillingModeToken,
+		TimePricing: &ChannelTimePricing{Timezone: "Asia/Shanghai"},
+	}})
+
+	require.NoError(t, err)
+	require.Len(t, pricing, 1)
+	require.Nil(t, pricing[0].TimePricing)
+}
+
 type compositeRouteRepoStubForAdmin struct {
 	routes    []CompositeModelRoute
 	created   *CompositeModelRoute
@@ -167,6 +167,27 @@ type CostBreakdown struct {
 	LongContextBillingApplied bool
 }

+func applyCostBreakdownMultiplier(cost *CostBreakdown, multiplier float64) {
+	if cost == nil || multiplier == 1 {
+		return
+	}
+	cost.InputCost *= multiplier
+	cost.ImageInputCost *= multiplier
+	cost.OutputCost *= multiplier
+	cost.ImageOutputCost *= multiplier
+	cost.CacheCreationCost *= multiplier
+	cost.CacheReadCost *= multiplier
+	cost.TotalCost *= multiplier
+	cost.ActualCost *= multiplier
+}
+
+func resolvedChannelTimeMultiplier(resolved *ResolvedPricing, at time.Time) float64 {
+	if resolved == nil || resolved.Source != PricingSourceChannel || resolved.channelPricing == nil {
+		return 1
+	}
+	return resolved.channelPricing.TimePricing.MultiplierAt(at)
+}
+
 // ErrModelPricingUnavailable indicates that none of the configured pricing
 // sources can price the requested model.
 var ErrModelPricingUnavailable = errors.New("pricing not found")
@@ -1030,6 +1051,7 @@ type CostInput struct {
 	UsageUnits                float64 // 音频等连续计量单位（分钟/小时/百万字符）
 	SizeTier                  string  // 按次/图片模式的层级标签（"1K","2K","4K","HD" 等）
 	RateMultiplier            float64
+	PricingAt                 time.Time             // 渠道分时定价使用的计费时刻
 	ServiceTier               string                // "priority","flex","" 等
 	Resolver                  *ModelPricingResolver // 定价解析器
 	Resolved                  *ResolvedPricing      // 可选：预解析的定价结果（避免重复 Resolve 调用）
@@ -1104,7 +1126,9 @@ func (s *BillingService) calculateTokenCost(resolved *ResolvedPricing, input Cos
 		applyLongCtx = applyLongCtx && *input.LongContextBillingEnabled
 	}

-	return s.computeTokenBreakdown(pricing, input.Tokens, input.RateMultiplier, input.ServiceTier, applyLongCtx), nil
+	breakdown := s.computeTokenBreakdown(pricing, input.Tokens, input.RateMultiplier, input.ServiceTier, applyLongCtx)
+	applyCostBreakdownMultiplier(breakdown, resolvedChannelTimeMultiplier(resolved, input.PricingAt))
+	return breakdown, nil
 }

 // computeTokenBreakdown 是 token 计费的核心逻辑，由 calculateTokenCost 和 calculateCostInternal 共用。
@@ -169,6 +169,154 @@ func TestCalculateCostUnified_ImageMode(t *testing.T) {
 	require.Equal(t, string(BillingModeImage), cost.BillingMode)
 }

+func channelTimeResolvedForTest(base *ModelPricing, intervals []PricingInterval) *ResolvedPricing {
+	return &ResolvedPricing{
+		Mode:        BillingModeToken,
+		BasePricing: base,
+		Intervals:   intervals,
+		Source:      PricingSourceChannel,
+		channelPricing: &ChannelModelPricing{
+			BillingMode: BillingModeToken,
+			TimePricing: &ChannelTimePricing{
+				Timezone: "Asia/Shanghai",
+				Periods: []ChannelTimePricingPeriod{{
+					StartTime:  "09:00",
+					EndTime:    "12:00",
+					Multiplier: 2,
+				}},
+			},
+		},
+		longContextPricingEnabled: true,
+	}
+}
+
+func TestCalculateCostUnified_ChannelTimePricingScalesBaseAndActualCost(t *testing.T) {
+	billing := NewBillingService(&config.Config{}, nil)
+	resolved := channelTimeResolvedForTest(&ModelPricing{InputPricePerToken: 0.001}, nil)
+
+	cost, err := billing.CalculateCostUnified(CostInput{
+		Ctx:            context.Background(),
+		Model:          "model",
+		Tokens:         UsageTokens{InputTokens: 1000},
+		RateMultiplier: 0.8,
+		Resolver:       &ModelPricingResolver{},
+		Resolved:       resolved,
+		PricingAt:      time.Date(2026, 8, 17, 1, 0, 0, 0, time.UTC),
+	})
+	require.NoError(t, err)
+	require.InDelta(t, 2.0, cost.InputCost, 1e-12)
+	require.InDelta(t, 2.0, cost.TotalCost, 1e-12)
+	require.InDelta(t, 1.6, cost.ActualCost, 1e-12)
+}
+
+func TestCalculateCostUnified_ChannelTimePricingScalesMatchingInterval(t *testing.T) {
+	intervalInputPrice := 0.003
+	resolved := channelTimeResolvedForTest(
+		&ModelPricing{InputPricePerToken: 0.001},
+		[]PricingInterval{{MinTokens: 0, InputPrice: &intervalInputPrice}},
+	)
+	billing := NewBillingService(&config.Config{}, nil)
+
+	cost, err := billing.CalculateCostUnified(CostInput{
+		Ctx:       context.Background(),
+		Model:     "model",
+		Tokens:    UsageTokens{InputTokens: 1000},
+		Resolver:  &ModelPricingResolver{},
+		Resolved:  resolved,
+		PricingAt: time.Date(2026, 8, 17, 1, 0, 0, 0, time.UTC),
+	})
+	require.NoError(t, err)
+	require.InDelta(t, 6.0, cost.InputCost, 1e-12)
+	require.InDelta(t, 6.0, cost.TotalCost, 1e-12)
+}
+
+func TestCalculateCostUnified_ChannelTimePricingScalesBaseOnUnmatchedInterval(t *testing.T) {
+	intervalInputPrice := 0.003
+	resolved := channelTimeResolvedForTest(
+		&ModelPricing{InputPricePerToken: 0.001},
+		[]PricingInterval{{MinTokens: 2000, InputPrice: &intervalInputPrice}},
+	)
+	billing := NewBillingService(&config.Config{}, nil)
+
+	cost, err := billing.CalculateCostUnified(CostInput{
+		Ctx:       context.Background(),
+		Model:     "model",
+		Tokens:    UsageTokens{InputTokens: 1000},
+		Resolver:  &ModelPricingResolver{},
+		Resolved:  resolved,
+		PricingAt: time.Date(2026, 8, 17, 1, 0, 0, 0, time.UTC),
+	})
+	require.NoError(t, err)
+	require.InDelta(t, 2.0, cost.InputCost, 1e-12)
+	require.InDelta(t, 2.0, cost.TotalCost, 1e-12)
+}
+
+func TestCalculateCostUnified_ChannelTimePricingDoesNotApplyToGroupPricing(t *testing.T) {
+	resolved := channelTimeResolvedForTest(&ModelPricing{InputPricePerToken: 0.001}, nil)
+	resolved.Source = PricingSourceGroup
+	billing := NewBillingService(&config.Config{}, nil)
+
+	cost, err := billing.CalculateCostUnified(CostInput{
+		Ctx:       context.Background(),
+		Model:     "model",
+		Tokens:    UsageTokens{InputTokens: 1000},
+		Resolver:  &ModelPricingResolver{},
+		Resolved:  resolved,
+		PricingAt: time.Date(2026, 8, 17, 1, 0, 0, 0, time.UTC),
+	})
+	require.NoError(t, err)
+	require.InDelta(t, 1.0, cost.TotalCost, 1e-12)
+}
+
+func TestCalculateCostUnified_ChannelTimePricingDoesNotApplyOutsideMatchingTime(t *testing.T) {
+	resolved := channelTimeResolvedForTest(&ModelPricing{InputPricePerToken: 0.001}, nil)
+	billing := NewBillingService(&config.Config{}, nil)
+
+	for _, pricingAt := range []time.Time{
+		time.Time{},
+		time.Date(2026, 8, 17, 5, 0, 0, 0, time.UTC),
+	} {
+		cost, err := billing.CalculateCostUnified(CostInput{
+			Ctx:       context.Background(),
+			Model:     "model",
+			Tokens:    UsageTokens{InputTokens: 1000},
+			Resolver:  &ModelPricingResolver{},
+			Resolved:  resolved,
+			PricingAt: pricingAt,
+		})
+		require.NoError(t, err)
+		require.InDelta(t, 1.0, cost.TotalCost, 1e-12)
+	}
+}
+
+func TestApplyCostBreakdownMultiplierScalesAllMonetaryFields(t *testing.T) {
+	cost := &CostBreakdown{
+		InputCost:                 1,
+		ImageInputCost:            2,
+		OutputCost:                3,
+		ImageOutputCost:           4,
+		CacheCreationCost:         5,
+		CacheReadCost:             6,
+		TotalCost:                 21,
+		ActualCost:                42,
+		BillingMode:               string(BillingModeToken),
+		LongContextBillingApplied: true,
+	}
+
+	applyCostBreakdownMultiplier(cost, 1.5)
+
+	require.InDelta(t, 1.5, cost.InputCost, 1e-12)
+	require.InDelta(t, 3.0, cost.ImageInputCost, 1e-12)
+	require.InDelta(t, 4.5, cost.OutputCost, 1e-12)
+	require.InDelta(t, 6.0, cost.ImageOutputCost, 1e-12)
+	require.InDelta(t, 7.5, cost.CacheCreationCost, 1e-12)
+	require.InDelta(t, 9.0, cost.CacheReadCost, 1e-12)
+	require.InDelta(t, 31.5, cost.TotalCost, 1e-12)
+	require.InDelta(t, 63.0, cost.ActualCost, 1e-12)
+	require.Equal(t, string(BillingModeToken), cost.BillingMode)
+	require.True(t, cost.LongContextBillingApplied)
+}
+
 // TestCalculateCostUnified_RateMultiplierZeroProducesZero 锁定新行为：
 // 保存时强制 > 0；若 0 仍泄漏到计费层，按 0 计费（而非历史上的 1.0）。
 func TestCalculateCostUnified_RateMultiplierZeroProducesZero(t *testing.T) {
@@ -87,21 +87,35 @@ type AccountStatsPricingRule struct {

 // ChannelModelPricing 渠道模型定价条目
 type ChannelModelPricing struct {
-	ID               int64             `json:"id,omitempty"`
-	ChannelID        int64             `json:"channel_id,omitempty"`
-	Platform         string            `json:"platform"` // 所属平台（anthropic/openai/gemini/...）
-	Models           []string          `json:"models"`
-	BillingMode      BillingMode       `json:"billing_mode"`
-	InputPrice       *float64          `json:"input_price"`
-	OutputPrice      *float64          `json:"output_price"`
-	CacheWritePrice  *float64          `json:"cache_write_price"`
-	CacheReadPrice   *float64          `json:"cache_read_price"`
-	ImageInputPrice  *float64          `json:"image_input_price"`
-	ImageOutputPrice *float64          `json:"image_output_price"`
-	PerRequestPrice  *float64          `json:"per_request_price"`
-	Intervals        []PricingInterval `json:"intervals"`
-	CreatedAt        time.Time         `json:"created_at,omitempty"`
-	UpdatedAt        time.Time         `json:"updated_at,omitempty"`
+	ID               int64               `json:"id,omitempty"`
+	ChannelID        int64               `json:"channel_id,omitempty"`
+	Platform         string              `json:"platform"` // 所属平台（anthropic/openai/gemini/...）
+	Models           []string            `json:"models"`
+	BillingMode      BillingMode         `json:"billing_mode"`
+	InputPrice       *float64            `json:"input_price"`
+	OutputPrice      *float64            `json:"output_price"`
+	CacheWritePrice  *float64            `json:"cache_write_price"`
+	CacheReadPrice   *float64            `json:"cache_read_price"`
+	ImageInputPrice  *float64            `json:"image_input_price"`
+	ImageOutputPrice *float64            `json:"image_output_price"`
+	PerRequestPrice  *float64            `json:"per_request_price"`
+	Intervals        []PricingInterval   `json:"intervals"`
+	TimePricing      *ChannelTimePricing `json:"time_pricing,omitempty"`
+	CreatedAt        time.Time           `json:"created_at,omitempty"`
+	UpdatedAt        time.Time           `json:"updated_at,omitempty"`
+}
+
+// ChannelTimePricing 渠道模型定价的分时倍率配置。
+type ChannelTimePricing struct {
+	Timezone string                     `json:"timezone"`
+	Periods  []ChannelTimePricingPeriod `json:"periods"`
+}
+
+// ChannelTimePricingPeriod 是秒级的左闭右开分时倍率区间，并兼容历史 HH:mm 数据。
+type ChannelTimePricingPeriod struct {
+	StartTime  string  `json:"start_time"`
+	EndTime    string  `json:"end_time"`
+	Multiplier float64 `json:"multiplier"`
 }

 // PricingInterval 定价区间（token 区间 / 按次分层 / 图片分辨率分层）
@@ -195,6 +209,12 @@ func (p ChannelModelPricing) Clone() ChannelModelPricing {
 		cp.Intervals = make([]PricingInterval, len(p.Intervals))
 		copy(cp.Intervals, p.Intervals)
 	}
+	if p.TimePricing != nil {
+		cp.TimePricing = &ChannelTimePricing{Timezone: p.TimePricing.Timezone}
+		if p.TimePricing.Periods != nil {
+			cp.TimePricing.Periods = append([]ChannelTimePricingPeriod(nil), p.TimePricing.Periods...)
+		}
+	}
 	return cp
 }

@@ -646,7 +646,47 @@ func validatePricingEntries(pricing []ChannelModelPricing) error {
 	if err := validatePricingIntervals(pricing); err != nil {
 		return err
 	}
-	return validatePricingBillingMode(pricing)
+	if err := validatePricingBillingMode(pricing); err != nil {
+		return err
+	}
+	return validatePricingTimePricing(pricing)
+}
+
+func validatePricingTimePricing(pricing []ChannelModelPricing) error {
+	for i := range pricing {
+		config := pricing[i].TimePricing
+		if config == nil {
+			continue
+		}
+		if len(config.Periods) == 0 {
+			pricing[i].TimePricing = nil
+			continue
+		}
+		mode := pricing[i].BillingMode
+		if mode != "" && mode != BillingModeToken {
+			return infraerrors.BadRequest("TIME_PRICING_UNSUPPORTED_MODE", "time pricing only supports token billing mode")
+		}
+		if err := validateChannelTimePricing(config); err != nil {
+			return infraerrors.BadRequest("INVALID_TIME_PRICING", fmt.Sprintf(
+				"invalid time pricing for platform '%s' models %v: %v", pricing[i].Platform, pricing[i].Models, err))
+		}
+	}
+	return nil
+}
+
+func validateAccountStatsPricingRules(rules []AccountStatsPricingRule) error {
+	for i := range rules {
+		for _, pricing := range rules[i].Pricing {
+			if pricing.TimePricing != nil && len(pricing.TimePricing.Periods) > 0 {
+				return fmt.Errorf("account stats pricing rule #%d: %w", i+1,
+					infraerrors.BadRequest("ACCOUNT_STATS_TIME_PRICING_UNSUPPORTED", "account stats pricing does not support time pricing"))
+			}
+		}
+		if err := validatePricingEntries(rules[i].Pricing); err != nil {
+			return fmt.Errorf("account stats pricing rule #%d: %w", i+1, err)
+		}
+	}
+	return nil
 }

 // validatePricingBillingMode 校验计费模式配置：按次/图片模式必须配价格或区间，所有价格字段不能为负，区间至少有一个价格字段。
@@ -755,10 +795,8 @@ func (s *ChannelService) Create(ctx context.Context, input *CreateChannelInput)
 	if err := validateChannelConfig(channel.ModelPricing, channel.ModelMapping); err != nil {
 		return nil, err
 	}
-	for i, rule := range channel.AccountStatsPricingRules {
-		if err := validatePricingEntries(rule.Pricing); err != nil {
-			return nil, fmt.Errorf("account stats pricing rule #%d: %w", i+1, err)
-		}
+	if err := validateAccountStatsPricingRules(channel.AccountStatsPricingRules); err != nil {
+		return nil, err
 	}

 	if err := s.repo.Create(ctx, channel); err != nil {
@@ -799,10 +837,8 @@ func (s *ChannelService) Update(ctx context.Context, id int64, input *UpdateChan
 	if err := validateChannelConfig(channel.ModelPricing, channel.ModelMapping); err != nil {
 		return nil, err
 	}
-	for i, rule := range channel.AccountStatsPricingRules {
-		if err := validatePricingEntries(rule.Pricing); err != nil {
-			return nil, fmt.Errorf("account stats pricing rule #%d: %w", i+1, err)
-		}
+	if err := validateAccountStatsPricingRules(channel.AccountStatsPricingRules); err != nil {
+		return nil, err
 	}

 	oldGroupIDs := s.getOldGroupIDs(ctx, id)
@@ -5,8 +5,10 @@ package service
 import (
 	"context"
 	"errors"
+	"net/http"
 	"testing"

+	infraerrors "github.com/Wei-Shaw/sub2api/internal/pkg/errors"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 	"github.com/stretchr/testify/require"
 	"github.com/tidwall/gjson"
@@ -2460,6 +2462,66 @@ func TestValidatePricingBillingMode(t *testing.T) {
 	}
 }

+func validTimePricingForTest() *ChannelTimePricing {
+	return &ChannelTimePricing{Timezone: "Asia/Shanghai", Periods: []ChannelTimePricingPeriod{
+		{StartTime: "09:00", EndTime: "12:00", Multiplier: 2},
+	}}
+}
+
+func TestValidatePricingTimePricing(t *testing.T) {
+	token := []ChannelModelPricing{{BillingMode: BillingModeToken, TimePricing: validTimePricingForTest()}}
+	require.NoError(t, validatePricingTimePricing(token))
+
+	implicitToken := []ChannelModelPricing{{TimePricing: validTimePricingForTest()}}
+	require.NoError(t, validatePricingTimePricing(implicitToken))
+
+	image := []ChannelModelPricing{{BillingMode: BillingModeImage, TimePricing: validTimePricingForTest()}}
+	modeErr := infraerrors.FromError(validatePricingTimePricing(image))
+	require.Equal(t, int32(http.StatusBadRequest), modeErr.Code)
+	require.Equal(t, "TIME_PRICING_UNSUPPORTED_MODE", modeErr.Reason)
+
+	invalid := []ChannelModelPricing{{
+		Platform:    PlatformOpenAI,
+		Models:      []string{"gpt-5"},
+		BillingMode: BillingModeToken,
+		TimePricing: &ChannelTimePricing{Timezone: "UTC+8", Periods: validTimePricingForTest().Periods},
+	}}
+	invalidErr := infraerrors.FromError(validatePricingTimePricing(invalid))
+	require.Equal(t, int32(http.StatusBadRequest), invalidErr.Code)
+	require.Equal(t, "INVALID_TIME_PRICING", invalidErr.Reason)
+	require.Contains(t, invalidErr.Message, "platform 'openai'")
+	require.Contains(t, invalidErr.Message, "models [gpt-5]")
+
+	invalidMultiplier := []ChannelModelPricing{{
+		Platform:    PlatformOpenAI,
+		Models:      []string{"gpt-5"},
+		BillingMode: BillingModeToken,
+		TimePricing: &ChannelTimePricing{Timezone: "Asia/Shanghai", Periods: []ChannelTimePricingPeriod{{
+			StartTime: "09:00", EndTime: "12:00", Multiplier: 1e-12,
+		}}},
+	}}
+	invalidMultiplierRawErr := validatePricingTimePricing(invalidMultiplier)
+	require.Error(t, invalidMultiplierRawErr)
+	invalidMultiplierErr := infraerrors.FromError(invalidMultiplierRawErr)
+	require.Equal(t, int32(http.StatusBadRequest), invalidMultiplierErr.Code)
+	require.Equal(t, "INVALID_TIME_PRICING", invalidMultiplierErr.Reason)
+
+	empty := []ChannelModelPricing{{BillingMode: BillingModeToken, TimePricing: &ChannelTimePricing{Timezone: "Asia/Shanghai"}}}
+	require.NoError(t, validatePricingTimePricing(empty))
+	require.Nil(t, empty[0].TimePricing)
+}
+
+func TestValidateAccountStatsPricingRulesRejectsTimePricing(t *testing.T) {
+	rules := []AccountStatsPricingRule{{Pricing: []ChannelModelPricing{{
+		BillingMode: BillingModeToken,
+		TimePricing: validTimePricingForTest(),
+	}}}}
+
+	appErr := infraerrors.FromError(validateAccountStatsPricingRules(rules))
+	require.Equal(t, int32(http.StatusBadRequest), appErr.Code)
+	require.Equal(t, "ACCOUNT_STATS_TIME_PRICING_UNSUPPORTED", appErr.Reason)
+}
+
 // ---------------------------------------------------------------------------
 // 12. Antigravity wildcard mapping isolation
 // ---------------------------------------------------------------------------
@@ -197,6 +197,14 @@ func TestChannelModelPricingClone(t *testing.T) {
 		Intervals: []PricingInterval{
 			{MinTokens: 0, TierLabel: "tier1"},
 		},
+		TimePricing: &ChannelTimePricing{
+			Timezone: "Asia/Shanghai",
+			Periods: []ChannelTimePricingPeriod{{
+				StartTime:  "09:00",
+				EndTime:    "12:00",
+				Multiplier: 2,
+			}},
+		},
 	}

 	cloned := original.Clone()
@@ -207,6 +215,13 @@ func TestChannelModelPricingClone(t *testing.T) {

 	cloned.Intervals[0].TierLabel = "hacked"
 	require.Equal(t, "tier1", original.Intervals[0].TierLabel)
+
+	cloned.TimePricing.Timezone = "America/New_York"
+	cloned.TimePricing.Periods[0].StartTime = "10:00"
+	cloned.TimePricing.Periods[0].Multiplier = 3
+	require.Equal(t, "Asia/Shanghai", original.TimePricing.Timezone)
+	require.Equal(t, "09:00", original.TimePricing.Periods[0].StartTime)
+	require.Equal(t, 2.0, original.TimePricing.Periods[0].Multiplier)
 }

 // --- BillingMode.IsValid ---
@@ -513,7 +528,6 @@ func TestSupportedModels_WildcardExpandedFromPricing(t *testing.T) {
 	}
 }

-
 func TestSupportedModels_MissingPricingKeepsNilPricing(t *testing.T) {
 	ch := &Channel{
 		ModelMapping: map[string]map[string]string{
@@ -0,0 +1,140 @@
+package service
+
+import (
+	"fmt"
+	"math"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+)
+
+var channelTimePricingLocations sync.Map
+
+type parsedChannelTimePeriod struct {
+	start      int
+	end        int
+	multiplier float64
+}
+
+// validateChannelTimePricing 校验分时倍率配置。nil 或空 periods 表示未启用。
+func validateChannelTimePricing(config *ChannelTimePricing) error {
+	if config == nil || len(config.Periods) == 0 {
+		return nil
+	}
+	if _, err := loadChannelTimePricingLocation(config.Timezone); err != nil {
+		return fmt.Errorf("timezone: %w", err)
+	}
+	_, err := parseChannelTimePeriods(config.Periods)
+	return err
+}
+
+// MultiplierAt 返回 at 对应的分时倍率。无配置或脏配置均安全降级为 1。
+func (config *ChannelTimePricing) MultiplierAt(at time.Time) float64 {
+	if config == nil || len(config.Periods) == 0 || at.IsZero() {
+		return 1.0
+	}
+	if err := validateChannelTimePricing(config); err != nil {
+		return 1.0
+	}
+	location, err := loadChannelTimePricingLocation(config.Timezone)
+	if err != nil {
+		return 1.0
+	}
+	periods, err := parseChannelTimePeriods(config.Periods)
+	if err != nil {
+		return 1.0
+	}
+
+	local := at.In(location)
+	second := local.Hour()*60*60 + local.Minute()*60 + local.Second()
+	for _, period := range periods {
+		if second >= period.start && second < period.end {
+			return period.multiplier
+		}
+	}
+	return 1.0
+}
+
+func loadChannelTimePricingLocation(name string) (*time.Location, error) {
+	if strings.TrimSpace(name) == "" {
+		return nil, fmt.Errorf("timezone is required")
+	}
+	if name == "Local" {
+		return nil, fmt.Errorf("local is not a supported timezone")
+	}
+	if cached, ok := channelTimePricingLocations.Load(name); ok {
+		location, valid := cached.(*time.Location)
+		if valid && location != nil {
+			return location, nil
+		}
+		channelTimePricingLocations.Delete(name)
+	}
+	location, err := time.LoadLocation(name)
+	if err != nil {
+		return nil, err
+	}
+	actual, _ := channelTimePricingLocations.LoadOrStore(name, location)
+	actualLocation, ok := actual.(*time.Location)
+	if !ok || actualLocation == nil {
+		return nil, fmt.Errorf("invalid cached timezone %q", name)
+	}
+	return actualLocation, nil
+}
+
+func parseChannelTime(value string, end bool) (int, error) {
+	if end && (value == "00:00" || value == "00:00:00") {
+		return 24 * 60 * 60, nil
+	}
+	layout := "15:04:05"
+	if len(value) == len("15:04") {
+		layout = "15:04"
+	}
+	parsed, err := time.Parse(layout, value)
+	if err != nil || parsed.Format(layout) != value {
+		return 0, fmt.Errorf("time %q must use HH:mm or HH:mm:ss format", value)
+	}
+	return parsed.Hour()*60*60 + parsed.Minute()*60 + parsed.Second(), nil
+}
+
+func parseChannelTimePeriods(periods []ChannelTimePricingPeriod) ([]parsedChannelTimePeriod, error) {
+	parsed := make([]parsedChannelTimePeriod, 0, len(periods))
+	for _, period := range periods {
+		if math.IsNaN(period.Multiplier) || math.IsInf(period.Multiplier, 0) || period.Multiplier <= 0 {
+			return nil, fmt.Errorf("multiplier must be finite and greater than 0")
+		}
+		if period.Multiplier < 0.01 {
+			return nil, fmt.Errorf("multiplier must be at least 0.01")
+		}
+		scaled := period.Multiplier * 100
+		if math.IsNaN(scaled) || math.IsInf(scaled, 0) {
+			return nil, fmt.Errorf("multiplier must remain finite when scaled")
+		}
+		if math.Abs(scaled-math.Round(scaled)) > 1e-9 {
+			return nil, fmt.Errorf("multiplier must have at most two decimal places")
+		}
+
+		start, err := parseChannelTime(period.StartTime, false)
+		if err != nil {
+			return nil, err
+		}
+		end, err := parseChannelTime(period.EndTime, true)
+		if err != nil {
+			return nil, err
+		}
+		if period.StartTime == period.EndTime || start >= end {
+			return nil, fmt.Errorf("start time must be before end time")
+		}
+		parsed = append(parsed, parsedChannelTimePeriod{start: start, end: end, multiplier: period.Multiplier})
+	}
+
+	sort.Slice(parsed, func(i, j int) bool {
+		return parsed[i].start < parsed[j].start
+	})
+	for i := 1; i < len(parsed); i++ {
+		if parsed[i].start < parsed[i-1].end {
+			return nil, fmt.Errorf("time pricing periods overlap")
+		}
+	}
+	return parsed, nil
+}
@@ -0,0 +1,166 @@
+//go:build unit
+
+package service
+
+import (
+	"math"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func timeConfig(periods ...ChannelTimePricingPeriod) *ChannelTimePricing {
+	return &ChannelTimePricing{Timezone: "Asia/Shanghai", Periods: periods}
+}
+
+func onePeriod() []ChannelTimePricingPeriod {
+	return []ChannelTimePricingPeriod{{StartTime: "09:00", EndTime: "12:00", Multiplier: 2}}
+}
+
+func TestValidateChannelTimePricing(t *testing.T) {
+	tests := []struct {
+		name    string
+		config  *ChannelTimePricing
+		wantErr string
+	}{
+		{name: "nil disabled", config: nil},
+		{name: "empty disabled", config: &ChannelTimePricing{Timezone: "Asia/Shanghai"}},
+		{name: "adjacent", config: timeConfig(
+			ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 2},
+			ChannelTimePricingPeriod{StartTime: "12:00", EndTime: "14:00", Multiplier: 1.5})},
+		{name: "midnight split", config: timeConfig(
+			ChannelTimePricingPeriod{StartTime: "22:00", EndTime: "00:00", Multiplier: 2},
+			ChannelTimePricingPeriod{StartTime: "00:00", EndTime: "02:00", Multiplier: 2})},
+		{name: "second precision", config: timeConfig(
+			ChannelTimePricingPeriod{StartTime: "09:00:00", EndTime: "12:00:00", Multiplier: 2},
+			ChannelTimePricingPeriod{StartTime: "14:00:00", EndTime: "18:00:00", Multiplier: 2})},
+		{name: "second precision overlap", config: timeConfig(
+			ChannelTimePricingPeriod{StartTime: "09:00:00", EndTime: "12:00:00", Multiplier: 2},
+			ChannelTimePricingPeriod{StartTime: "11:59:59", EndTime: "14:00:00", Multiplier: 2}), wantErr: "overlap"},
+		{name: "empty timezone", config: &ChannelTimePricing{Periods: onePeriod()}, wantErr: "timezone"},
+		{name: "whitespace timezone", config: &ChannelTimePricing{Timezone: "  ", Periods: onePeriod()}, wantErr: "timezone"},
+		{name: "timezone", config: &ChannelTimePricing{Timezone: "UTC+8", Periods: onePeriod()}, wantErr: "timezone"},
+		{name: "format", config: timeConfig(ChannelTimePricingPeriod{StartTime: "9:00", EndTime: "12:00", Multiplier: 2}), wantErr: "HH:mm"},
+		{name: "equal midnight", config: timeConfig(ChannelTimePricingPeriod{StartTime: "00:00", EndTime: "00:00", Multiplier: 2}), wantErr: "before"},
+		{name: "cross midnight", config: timeConfig(ChannelTimePricingPeriod{StartTime: "22:00", EndTime: "02:00", Multiplier: 2}), wantErr: "before"},
+		{name: "overlap", config: timeConfig(
+			ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 2},
+			ChannelTimePricingPeriod{StartTime: "11:59", EndTime: "14:00", Multiplier: 2}), wantErr: "overlap"},
+		{name: "zero", config: timeConfig(ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 0}), wantErr: "greater than 0"},
+		{name: "minimum positive", config: timeConfig(ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 0.01})},
+		{name: "tiny positive", config: timeConfig(ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 1e-12}), wantErr: "at least 0.01"},
+		{name: "below minimum", config: timeConfig(ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 0.001}), wantErr: "at least 0.01"},
+		{name: "three decimals", config: timeConfig(ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 1.001}), wantErr: "decimal"},
+		{name: "scaled overflow", config: timeConfig(ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: math.MaxFloat64}), wantErr: "finite"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := validateChannelTimePricing(tt.config)
+			if tt.wantErr == "" {
+				require.NoError(t, err)
+				return
+			}
+			require.Error(t, err)
+			require.True(t, strings.Contains(err.Error(), tt.wantErr), "error %q does not contain %q", err, tt.wantErr)
+		})
+	}
+}
+
+func TestChannelTimePricingMultiplierAt(t *testing.T) {
+	config := timeConfig(ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 2})
+	tests := []struct {
+		name string
+		at   time.Time
+		want float64
+	}{
+		{name: "Shanghai 08:59", at: time.Date(2026, 6, 29, 0, 59, 0, 0, time.UTC), want: 1},
+		{name: "Shanghai 09:00", at: time.Date(2026, 6, 29, 1, 0, 0, 0, time.UTC), want: 2},
+		{name: "Shanghai 11:59", at: time.Date(2026, 6, 29, 3, 59, 0, 0, time.UTC), want: 2},
+		{name: "Shanghai 12:00", at: time.Date(2026, 6, 29, 4, 0, 0, 0, time.UTC), want: 1},
+		{name: "Shanghai 14:00", at: time.Date(2026, 6, 29, 6, 0, 0, 0, time.UTC), want: 1},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.want, config.MultiplierAt(tt.at))
+		})
+	}
+
+	newYork := &ChannelTimePricing{Timezone: "America/New_York", Periods: onePeriod()}
+	at := time.Date(2026, 6, 29, 14, 0, 0, 0, time.UTC)
+	require.Equal(t, 1.0, config.MultiplierAt(at))
+	require.Equal(t, 2.0, newYork.MultiplierAt(at))
+}
+
+func TestChannelTimePricingMultiplierAtSecondPrecision(t *testing.T) {
+	config := timeConfig(ChannelTimePricingPeriod{StartTime: "09:00:30", EndTime: "09:00:45", Multiplier: 2})
+	shanghai, err := time.LoadLocation("Asia/Shanghai")
+	require.NoError(t, err)
+
+	tests := []struct {
+		name string
+		at   time.Time
+		want float64
+	}{
+		{name: "before", at: time.Date(2026, 6, 29, 9, 0, 29, 0, shanghai), want: 1},
+		{name: "start", at: time.Date(2026, 6, 29, 9, 0, 30, 0, shanghai), want: 2},
+		{name: "last matching second", at: time.Date(2026, 6, 29, 9, 0, 44, 999_999_999, shanghai), want: 2},
+		{name: "end", at: time.Date(2026, 6, 29, 9, 0, 45, 0, shanghai), want: 1},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.want, config.MultiplierAt(tt.at))
+		})
+	}
+}
+
+func TestChannelTimePricingMultiplierAtMidnightSplit(t *testing.T) {
+	config := timeConfig(
+		ChannelTimePricingPeriod{StartTime: "22:00", EndTime: "00:00", Multiplier: 2},
+		ChannelTimePricingPeriod{StartTime: "00:00", EndTime: "02:00", Multiplier: 3},
+	)
+	shanghai, err := time.LoadLocation("Asia/Shanghai")
+	require.NoError(t, err)
+	tests := []struct {
+		name string
+		at   time.Time
+		want float64
+	}{
+		{name: "23:59", at: time.Date(2026, 6, 29, 23, 59, 0, 0, shanghai), want: 2},
+		{name: "next day 00:00", at: time.Date(2026, 6, 30, 0, 0, 0, 0, shanghai), want: 3},
+		{name: "02:00", at: time.Date(2026, 6, 30, 2, 0, 0, 0, shanghai), want: 1},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.want, config.MultiplierAt(tt.at))
+		})
+	}
+}
+
+func TestChannelTimePricingMultiplierAtDegradesForInvalidConfigurations(t *testing.T) {
+	var nilConfig *ChannelTimePricing
+	zeroTime := time.Time{}
+	validAt := time.Date(2026, 6, 29, 1, 0, 0, 0, time.UTC)
+
+	require.Equal(t, 1.0, nilConfig.MultiplierAt(validAt))
+	require.Equal(t, 1.0, timeConfig().MultiplierAt(validAt))
+	require.Equal(t, 1.0, timeConfig(ChannelTimePricingPeriod{StartTime: "09:00", EndTime: "12:00", Multiplier: 2}).MultiplierAt(zeroTime))
+	require.Equal(t, 1.0, (&ChannelTimePricing{Periods: onePeriod()}).MultiplierAt(validAt))
+	require.Equal(t, 1.0, (&ChannelTimePricing{Timezone: "  ", Periods: onePeriod()}).MultiplierAt(validAt))
+	require.Equal(t, 1.0, (&ChannelTimePricing{Timezone: "UTC+8", Periods: onePeriod()}).MultiplierAt(validAt))
+	require.Equal(t, 1.0, timeConfig(ChannelTimePricingPeriod{StartTime: "22:00", EndTime: "02:00", Multiplier: 2}).MultiplierAt(validAt))
+}
+
+func TestChannelTimePricingRejectsLocalTimezone(t *testing.T) {
+	config := &ChannelTimePricing{Timezone: "Local", Periods: onePeriod()}
+
+	err := validateChannelTimePricing(config)
+	require.Error(t, err)
+	require.Contains(t, err.Error(), "timezone")
+	require.Equal(t, 1.0, config.MultiplierAt(time.Date(2026, 6, 29, 1, 0, 0, 0, time.UTC)))
+}
@@ -345,6 +345,38 @@ func TestGatewayServiceRecordUsage_PeakRateAffectsTokenModeImageOutputTokens(t *
 	require.InDelta(t, expectedActual, userRepo.lastAmount, 1e-12)
 }

+func TestGatewayServiceRecordUsage_TimePricingUsesPricingAt(t *testing.T) {
+	groupID := int64(904)
+	requestStart := time.Date(2024, time.January, 2, 2, 0, 0, 0, time.UTC) // 上海 10:00
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	userRepo := &openAIRecordUsageUserRepoStub{}
+	svc := newGatewayRecordUsageServiceForTest(usageRepo, userRepo, &openAIRecordUsageSubRepoStub{})
+	svc.resolver = newOpenAITokenImageChannelPricingResolverWithTimeForTest(t, groupID, "gpt-5.1", &ChannelTimePricing{
+		Timezone: "Asia/Shanghai",
+		Periods:  []ChannelTimePricingPeriod{{StartTime: "09:00", EndTime: "12:00", Multiplier: 2}},
+	})
+
+	err := svc.RecordUsage(context.Background(), &RecordUsageInput{
+		Result: &ForwardResult{
+			RequestID: "gateway_time_pricing_request_start",
+			Model:     "gpt-5.1",
+			Usage:     ClaudeUsage{InputTokens: 1000, OutputTokens: 500},
+		},
+		APIKey: &APIKey{ID: 804, GroupID: i64p(groupID), Group: &Group{
+			ID: groupID, RateMultiplier: 0.8, SubscriptionType: SubscriptionTypeSubscription,
+		}},
+		User:      &User{ID: 604},
+		Account:   &Account{ID: 704},
+		PricingAt: requestStart,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	baseCost := 1000*3e-6 + 500*15e-6
+	require.InDelta(t, baseCost*2, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, baseCost*2*0.8, usageRepo.lastLog.ActualCost, 1e-12)
+	require.InDelta(t, 0.8, usageRepo.lastLog.RateMultiplier, 1e-12)
+}
 func TestGatewayServiceRecordUsage_UsesExplicitPricingAtForPeakRate(t *testing.T) {
 	for _, platform := range []string{PlatformAnthropic, PlatformGemini, PlatformGrok, PlatformAntigravity} {
 		t.Run(platform, func(t *testing.T) {
@@ -838,7 +838,7 @@ func (s *GatewayService) recordUsageCore(ctx context.Context, input *recordUsage
 	}

 	// 计算费用
-	cost := s.calculateRecordUsageCost(ctx, result, apiKey, billingModel, multiplier, imageMultiplier, opts)
+	cost := s.calculateRecordUsageCost(ctx, result, apiKey, billingModel, multiplier, imageMultiplier, pricingAt, opts)
 	// response_model：按上游成功响应自报的模型计费（渠道显式开启才生效）。
 	// 采纳条件见 responseModelBillingDeclaration + hasIdentifiedResponseModelPricing
 	// + responseModelBillingAdoptable。任一条件不满足都静默回落基线，即开启本模式前的
@@ -850,7 +850,7 @@ func (s *GatewayService) recordUsageCore(ctx context.Context, input *recordUsage
 		result.ImageCount > 0 || result.AudioUsage != nil || result.SearchCount > 0,
 	); responseModel != "" && !strings.EqualFold(responseModel, strings.TrimSpace(billingModel)) {
 		if identified, responseChannelPriced := s.hasIdentifiedResponseModelPricing(ctx, responseModel, apiKey); identified {
-			responseCost := s.calculateRecordUsageCost(ctx, result, apiKey, responseModel, multiplier, imageMultiplier, opts)
+			responseCost := s.calculateRecordUsageCost(ctx, result, apiKey, responseModel, multiplier, imageMultiplier, pricingAt, opts)
 			baselineChannelPriced := s.resolveChannelPricing(ctx, billingModel, apiKey) != nil
 			if responseModelBillingAdoptable(cost, responseCost, baselineChannelPriced, responseChannelPriced) {
 				// billingModel 到此为止只是定价查表的入参，后续流程只消费 cost，
@@ -939,12 +939,13 @@ func (s *GatewayService) calculateRecordUsageCost(
 	billingModel string,
 	multiplier float64,
 	imageMultiplier float64,
+	pricingAt time.Time,
 	opts *recordUsageOpts,
 ) *CostBreakdown {
 	// 图片生成：渠道定价为 token 计费时走 token 路径，否则走图片计费
 	if result.ImageCount > 0 {
 		if resolved := s.resolveChannelPricing(ctx, billingModel, apiKey); resolved != nil && resolved.Mode == BillingModeToken {
-			return s.calculateTokenCost(ctx, result, apiKey, billingModel, multiplier, opts)
+			return s.calculateTokenCost(ctx, result, apiKey, billingModel, multiplier, pricingAt, opts)
 		}
 		return s.calculateImageCost(ctx, result, apiKey, billingModel, imageMultiplier)
 	}
@@ -968,7 +969,7 @@ func (s *GatewayService) calculateRecordUsageCost(
 	}

 	// Token 计费；SearchCount 为叠加 surcharge（不替代 token）。
-	tokenCost := s.calculateTokenCost(ctx, result, apiKey, billingModel, multiplier, opts)
+	tokenCost := s.calculateTokenCost(ctx, result, apiKey, billingModel, multiplier, pricingAt, opts)
 	if result.SearchCount > 0 {
 		price := groupSearchPricePer1kFromAPIKey(apiKey)
 		if price != nil && *price == 0 {
@@ -1127,6 +1128,7 @@ func (s *GatewayService) calculateTokenCost(
 	apiKey *APIKey,
 	billingModel string,
 	multiplier float64,
+	pricingAt time.Time,
 	opts *recordUsageOpts,
 ) *CostBreakdown {
 	tokens := UsageTokens{
@@ -1154,6 +1156,7 @@ func (s *GatewayService) calculateTokenCost(
 			Tokens:         tokens,
 			RequestCount:   1,
 			RateMultiplier: multiplier,
+			PricingAt:      pricingAt,
 			Resolver:       s.resolver,
 			Resolved:       resolved,
 		})
@@ -1164,7 +1167,7 @@ func (s *GatewayService) calculateTokenCost(
 		gid := apiKey.Group.ID
 		cost, err = s.billingService.CalculateCostUnified(CostInput{
 			Ctx: ctx, Model: billingModel, GroupID: &gid, Group: apiKey.Group,
-			Tokens: tokens, RequestCount: 1, RateMultiplier: multiplier, Resolver: s.resolver,
+			Tokens: tokens, RequestCount: 1, RateMultiplier: multiplier, PricingAt: pricingAt, Resolver: s.resolver,
 		})
 	} else {
 		cost, err = s.billingService.CalculateCost(billingModel, tokens, multiplier)
@@ -5,6 +5,7 @@ package service
 import (
 	"context"
 	"testing"
+	"time"

 	"github.com/Wei-Shaw/sub2api/internal/config"
 	"github.com/stretchr/testify/require"
@@ -50,7 +51,7 @@ func TestCalculateOpenAIRecordUsageCostWebSearchPerCall(t *testing.T) {
 	// 即使 token 倍率（含高峰，3.0）更高也不采用。
 	apiKey := &APIKey{ID: 1, GroupID: &groupID, Group: &Group{ID: groupID, Platform: PlatformOpenAI}}
 	result := &OpenAIForwardResult{Model: "gpt-5.6-sol", UpstreamModel: "gpt-5.6-sol", WebSearchCalls: 1}
-	cost, err := svc.calculateOpenAIRecordUsageCost(context.Background(), result, apiKey, []string{"gpt-5.6-sol"}, 3.0, 1.0, 1.0, 2.0, UsageTokens{}, "", boolPtr(false))
+	cost, err := svc.calculateOpenAIRecordUsageCost(context.Background(), result, apiKey, []string{"gpt-5.6-sol"}, 3.0, 1.0, 1.0, 2.0, UsageTokens{}, "", boolPtr(false), time.Time{})
 	require.NoError(t, err)
 	require.Equal(t, string(BillingModePerRequest), cost.BillingMode)
 	require.InDelta(t, 0.01, cost.TotalCost, 1e-12)
@@ -58,7 +59,7 @@ func TestCalculateOpenAIRecordUsageCostWebSearchPerCall(t *testing.T) {

 	// 分组配置单价 0.005
 	apiKey.Group.WebSearchPricePerCall = float64Ptr(0.005)
-	cost, err = svc.calculateOpenAIRecordUsageCost(context.Background(), result, apiKey, []string{"gpt-5.6-sol"}, 1.0, 1.0, 1.0, 1.0, UsageTokens{}, "", boolPtr(false))
+	cost, err = svc.calculateOpenAIRecordUsageCost(context.Background(), result, apiKey, []string{"gpt-5.6-sol"}, 1.0, 1.0, 1.0, 1.0, UsageTokens{}, "", boolPtr(false), time.Time{})
 	require.NoError(t, err)
 	require.InDelta(t, 0.005, cost.TotalCost, 1e-12)
 	require.InDelta(t, 0.005, cost.ActualCost, 1e-12)
@@ -66,7 +67,7 @@ func TestCalculateOpenAIRecordUsageCostWebSearchPerCall(t *testing.T) {
 	// WebSearchCalls = 0 时不得走按次分支（无定价数据会返回 pricing 错误，
 	// 证明回落到了 token 路径而不是被按次分支吞掉）。
 	result.WebSearchCalls = 0
-	_, err = svc.calculateOpenAIRecordUsageCost(context.Background(), result, apiKey, []string{"gpt-5.6-sol"}, 1.0, 1.0, 1.0, 1.0, UsageTokens{InputTokens: 10}, "", boolPtr(false))
+	_, err = svc.calculateOpenAIRecordUsageCost(context.Background(), result, apiKey, []string{"gpt-5.6-sol"}, 1.0, 1.0, 1.0, 1.0, UsageTokens{InputTokens: 10}, "", boolPtr(false), time.Time{})
 	require.Error(t, err)
 }

@@ -64,7 +64,7 @@ func TestCalculateOpenAIRecordUsageCost_EmptyCandidatesIsPricingUnavailable(t *t

 	_, err := svc.calculateOpenAIRecordUsageCost(
 		context.Background(), nil, apiKey, nil,
-		1.0, 1.0, 1.0, 1.0, UsageTokens{InputTokens: 100}, "", nil,
+		1.0, 1.0, 1.0, 1.0, UsageTokens{InputTokens: 100}, "", nil, time.Time{},
 	)
 	require.Error(t, err)
 	require.True(t, isUsagePricingUnavailableError(err),
@@ -504,6 +504,71 @@ func TestOpenAIGatewayServiceRecordUsage_PeakRateAffectsTokenModeImageOutputToke
 	require.InDelta(t, expectedActual, userRepo.lastAmount, 1e-12)
 }

+func TestOpenAIGatewayServiceRecordUsage_TimePricingUsesPricingAt(t *testing.T) {
+	groupID := int64(16)
+	requestStart := time.Date(2024, time.January, 2, 2, 0, 0, 0, time.UTC) // 上海 10:00
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	userRepo := &openAIRecordUsageUserRepoStub{}
+	svc := newOpenAIRecordUsageServiceForTest(usageRepo, userRepo, &openAIRecordUsageSubRepoStub{}, nil)
+	svc.resolver = newOpenAITokenImageChannelPricingResolverWithTimeForTest(t, groupID, "gpt-5.1", &ChannelTimePricing{
+		Timezone: "Asia/Shanghai",
+		Periods:  []ChannelTimePricingPeriod{{StartTime: "09:00", EndTime: "12:00", Multiplier: 2}},
+	})
+
+	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
+		Result: &OpenAIForwardResult{
+			RequestID: "openai_time_pricing_request_start",
+			Model:     "gpt-5.1",
+			Usage:     OpenAIUsage{InputTokens: 1000, OutputTokens: 500},
+		},
+		APIKey: &APIKey{ID: 1006, GroupID: i64p(groupID), Group: &Group{
+			ID: groupID, RateMultiplier: 0.8, SubscriptionType: SubscriptionTypeSubscription,
+		}},
+		User:      &User{ID: 2006},
+		Account:   &Account{ID: 3006},
+		PricingAt: requestStart,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	baseCost := 1000*3e-6 + 500*15e-6
+	require.InDelta(t, baseCost*2, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, baseCost*2*0.8, usageRepo.lastLog.ActualCost, 1e-12)
+	require.InDelta(t, 0.8, usageRepo.lastLog.RateMultiplier, 1e-12)
+}
+
+func TestOpenAIGatewayServiceRecordUsage_TimePricingUsesExplicitPricingAt(t *testing.T) {
+	groupID := int64(17)
+	pricingAt := time.Date(2024, time.January, 2, 0, 0, 0, 0, time.UTC) // 上海 08:00
+	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
+	userRepo := &openAIRecordUsageUserRepoStub{}
+	svc := newOpenAIRecordUsageServiceForTest(usageRepo, userRepo, &openAIRecordUsageSubRepoStub{}, nil)
+	svc.resolver = newOpenAITokenImageChannelPricingResolverWithTimeForTest(t, groupID, "gpt-5.1", &ChannelTimePricing{
+		Timezone: "Asia/Shanghai",
+		Periods:  []ChannelTimePricingPeriod{{StartTime: "09:00", EndTime: "12:00", Multiplier: 2}},
+	})
+
+	err := svc.RecordUsage(context.Background(), &OpenAIRecordUsageInput{
+		Result: &OpenAIForwardResult{
+			RequestID: "openai_time_pricing_explicit",
+			Model:     "gpt-5.1",
+			Usage:     OpenAIUsage{InputTokens: 1000, OutputTokens: 500},
+		},
+		APIKey: &APIKey{ID: 1007, GroupID: i64p(groupID), Group: &Group{
+			ID: groupID, RateMultiplier: 0.8, SubscriptionType: SubscriptionTypeSubscription,
+		}},
+		User:      &User{ID: 2007},
+		Account:   &Account{ID: 3007},
+		PricingAt: pricingAt,
+	})
+
+	require.NoError(t, err)
+	require.NotNil(t, usageRepo.lastLog)
+	baseCost := 1000*3e-6 + 500*15e-6
+	require.InDelta(t, baseCost, usageRepo.lastLog.TotalCost, 1e-12)
+	require.InDelta(t, baseCost*0.8, usageRepo.lastLog.ActualCost, 1e-12)
+	require.InDelta(t, 0.8, usageRepo.lastLog.RateMultiplier, 1e-12)
+}
 func TestOpenAIGatewayServiceRecordUsage_IncludesEndpointMetadata(t *testing.T) {
 	usageRepo := &openAIRecordUsageLogRepoStub{inserted: true}
 	userRepo := &openAIRecordUsageUserRepoStub{}
@@ -2640,6 +2705,20 @@ func newOpenAITokenImageChannelPricingResolverForTest(t *testing.T, groupID int6
 	return NewModelPricingResolver(cs, NewBillingService(&config.Config{}, nil))
 }

+func newOpenAITokenImageChannelPricingResolverWithTimeForTest(
+	t *testing.T,
+	groupID int64,
+	model string,
+	timePricing *ChannelTimePricing,
+) *ModelPricingResolver {
+	t.Helper()
+	resolver := newOpenAITokenImageChannelPricingResolverForTest(t, groupID, model)
+	cached, ok := resolver.channelService.cache.Load().(*channelCache)
+	require.True(t, ok)
+	cached.pricingByGroupModel[channelModelKey{groupID: groupID, model: model}].TimePricing = timePricing
+	return resolver
+}
+
 type openAIMediaPriceGroupRepoStub struct {
 	GroupRepository
 	group *Group
@@ -2668,6 +2747,7 @@ func TestGatewayServiceCalculateRecordUsageCost_ChannelImageBillingUsesImageCoun
 		"gemini-image",
 		0.15,
 		1.0,
+		time.Time{},
 		nil,
 	)

@@ -2707,6 +2787,7 @@ func TestGatewayServiceCalculateRecordUsageCost_ChannelImageBillingUsesSizeTier(
 		"gemini-image",
 		1.0,
 		1.0,
+		time.Time{},
 		nil,
 	)

@@ -2739,6 +2820,7 @@ func TestGatewayServiceCalculateRecordUsageCost_GroupImagePriceOverridesChannelI
 		"gemini-image",
 		1.0,
 		1.0,
+		time.Time{},
 		nil,
 	)

@@ -2802,6 +2884,7 @@ func TestGatewayServiceCalculateRecordUsageCost_ChannelImageBillingNormalizesMis
 		"gemini-image",
 		1.0,
 		1.0,
+		time.Time{},
 		nil,
 	)

@@ -5,6 +5,7 @@ package service
 import (
 	"context"
 	"testing"
+	"time"

 	"github.com/stretchr/testify/require"
 )
@@ -37,6 +38,7 @@ func TestCalculateOpenAIRecordUsageCost_SearchIsAdditiveToTokens(t *testing.T) {
 		UsageTokens{InputTokens: 1000, OutputTokens: 500},
 		"",
 		boolPtr(false),
+		time.Time{},
 	)
 	require.NoError(t, err)
 	require.NotNil(t, cost)
@@ -67,6 +69,7 @@ func TestCalculateOpenAIRecordUsageCost_SearchOnlyWhenNoTokenPricing(t *testing.
 		UsageTokens{},
 		"",
 		boolPtr(false),
+		time.Time{},
 	)
 	require.NoError(t, err)
 	require.NotNil(t, cost)
@@ -112,6 +115,7 @@ func TestCalculateOpenAIRecordUsageCost_TokenPricingErrorNotSwallowedBySearch(t
 		UsageTokens{InputTokens: 1000, OutputTokens: 500},
 		"",
 		boolPtr(false),
+		time.Time{},
 	)
 	require.Error(t, err)
 	require.Nil(t, cost)
@@ -177,7 +177,8 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 	// 变价）；未装配 PricingAt 的路径回退记录时刻，保持既有行为。不并入上面的
 	// Resolve，以免污染 user:group 倍率缓存。
 	baseMultiplier := multiplier
-	multiplier, imageMultiplier := computePeakAwareMultipliers(apiKey, baseMultiplier, openAIUsagePricingAt(input))
+	pricingAt := openAIUsagePricingAt(input)
+	multiplier, imageMultiplier := computePeakAwareMultipliers(apiKey, baseMultiplier, pricingAt)
 	videoMultiplier := resolveVideoRateMultiplier(apiKey, baseMultiplier)

 	var cost *CostBreakdown
@@ -225,6 +226,7 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 		tokens,
 		serviceTier,
 		longContextBillingGate,
+		pricingAt,
 	)
 	if err != nil {
 		if !isUsagePricingUnavailableError(err) {
@@ -257,7 +259,7 @@ func (s *OpenAIGatewayService) RecordUsage(ctx context.Context, input *OpenAIRec
 			responseModels := s.filterCNProviderBillingModelCandidates(ctx, account, apiKey, usageBillingModelCandidates(responseModel))
 			responseCost, responseErr := s.calculateOpenAIRecordUsageCost(
 				ctx, result, apiKey, responseModels, multiplier, imageMultiplier,
-				videoMultiplier, baseMultiplier, tokens, serviceTier, longContextBillingGate,
+				videoMultiplier, baseMultiplier, tokens, serviceTier, longContextBillingGate, pricingAt,
 			)
 			// 基线定价源以 baselineBillingModel 为准：它正是 calculateOpenAIRecordUsageCost
 			// 内部做渠道定价判断时使用的模型，且"首候选有渠道价"必然意味着首候选就是实际
@@ -506,6 +508,7 @@ func (s *OpenAIGatewayService) calculateOpenAIRecordUsageCost(
 	tokens UsageTokens,
 	serviceTier string,
 	longContextBillingGate *bool,
+	pricingAt time.Time,
 ) (*CostBreakdown, error) {
 	billingModel := firstUsageBillingModel(billingModels)
 	if result != nil && result.WebSearchCalls > 0 {
@@ -555,6 +558,7 @@ func (s *OpenAIGatewayService) calculateOpenAIRecordUsageCost(
 				apiKey,
 				candidate,
 				multiplier,
+				pricingAt,
 				tokens,
 				serviceTier,
 				longContextBillingGate,
@@ -647,6 +651,7 @@ func (s *OpenAIGatewayService) calculateOpenAIRecordUsageTokenCost(
 	apiKey *APIKey,
 	billingModel string,
 	multiplier float64,
+	pricingAt time.Time,
 	tokens UsageTokens,
 	serviceTier string,
 	longContextBillingGate *bool,
@@ -655,7 +660,7 @@ func (s *OpenAIGatewayService) calculateOpenAIRecordUsageTokenCost(
 		gid := apiKey.Group.ID
 		return s.billingService.CalculateCostUnified(CostInput{
 			Ctx: ctx, Model: billingModel, GroupID: &gid, Group: apiKey.Group,
-			Tokens: tokens, RequestCount: 1, RateMultiplier: multiplier,
+			Tokens: tokens, RequestCount: 1, RateMultiplier: multiplier, PricingAt: pricingAt,
 			ServiceTier: serviceTier, Resolver: s.resolver,
 			LongContextBillingEnabled: longContextBillingGate,
 		})
@@ -215,10 +215,13 @@ type OpenAIWSIngressHooks struct {
 	// before channel or account mapping. Ingress modes preserve it for usage
 	// attribution while MapRequestModel determines the upstream model.
 	InitialRequestModel string
+	// InitialTurnStartedAt freezes when the first response.create was accepted.
+	InitialTurnStartedAt time.Time
 	// MaxReasoningEffort limits explicit reasoning effort values for this WS session.
 	MaxReasoningEffort string
 	// ReasoningEffortMappings rewrites explicit effort values for this WS session.
 	ReasoningEffortMappings []ReasoningEffortMapping
+	TurnStarted             func(turn int, startedAt time.Time)
 	BeforeTurn              func(turn int) error
 	BeforeRequest           func(turn int, payload []byte, originalModel string) error
 	// MapRequestModel resolves the current turn's client model to the model
@@ -92,11 +92,9 @@ func (s *OpenAIGatewayService) ProxyResponsesWebSocketFromClient(
 			if wsDecision.Transport != OpenAIUpstreamTransportResponsesWebsocketV2 {
 				return fmt.Errorf("websocket ingress requires ws_v2 transport, got=%s", wsDecision.Transport)
 			}
-			// 注意：透传 relay 只回调 hooks.AfterTurn，没有 turn 起始回调，
-			// 因此下面这条路径永远不会触发 hooks.BeforeTurn——分组利润控制的
-			// turn 级复核与 turn 级 pricingAt 冻结都不覆盖透传 ingress，
-			// 只有建连时的准入门生效。handler 侧据此把 turn 定价留作零值，
-			// 由 RecordUsage 回退到记录时刻（见 openAIWSTurnPricing 注释）。
+			// 透传 relay 通过 TurnStarted 记录每个 turn 的开始时刻，但不触发
+			// BeforeTurn；因此仍只有建连时的利润准入门，没有 turn 级复核。
+			// handler 计费在 turn 定价未冻结时回退到对应的 turn 开始时刻。
 			return s.proxyResponsesWebSocketV2Passthrough(
 				ctx,
 				c,
@@ -60,18 +60,13 @@ func startPassthroughHookRecordingServer(
 	return server, serverErr
 }

-// TestPassthroughIngressNeverCallsBeforeTurn 钉死 ws_v2 透传 ingress 与 handler
-// 侧 turn 定价的耦合：透传 relay 只回调 AfterTurn，没有任何 turn 起始回调，
-// 因此 hooks.BeforeTurn 永远不会触发。
+// TestPassthroughIngressReportsTurnStartedBeforeAfterTurnWithoutBeforeTurn 钉死
+// ws_v2 透传 ingress 与 handler 侧 turn 定价的耦合：透传 relay 不触发
+// BeforeTurn，但会在每个 AfterTurn 前通过 TurnStarted 报告同一 turn 的开始时刻。
 //
-// handler 依赖这一点：openAIWSTurnPricing 零值起步，透传连接的每个 turn 都拿
-// 不到冻结的 pricingAt，RecordUsage 回退到记录时刻——与引入分组利润控制前的
-// 基线一致。若把 turn 定价初始化成建连时刻，透传连接的所有 turn 就会被钉死在
-// 建连时的高峰因子，客户端峰前建连保活即可全程按谷价结算。
-//
-// 若本断言因为透传补齐了 turn 起始回调而失败：这是好事，请同步复核
-// openAIWSTurnPricing 的零值语义与透传路径的 turn 级利润复核。
-func TestPassthroughIngressNeverCallsBeforeTurn(t *testing.T) {
+// handler 的 recordTurnStart 保存该时刻，AfterTurn 再用 currentOr(turnStart)
+// 作为计费 PricingAt；不触发 BeforeTurn 也意味着透传仍没有 turn 级利润复核。
+func TestPassthroughIngressReportsTurnStartedBeforeAfterTurnWithoutBeforeTurn(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	controlCtx, cancelControl := context.WithCancelCause(context.Background())
 	defer cancelControl(context.Canceled)
@@ -81,17 +76,29 @@ func TestPassthroughIngressNeverCallsBeforeTurn(t *testing.T) {

 	var hooksMu sync.Mutex
 	beforeTurnCalls := 0
-	afterTurnCalls := 0
+	expectedTurnStartedAt := time.Date(2026, time.August, 17, 9, 59, 59, 0, time.UTC)
+	type hookEvent struct {
+		name      string
+		turn      int
+		startedAt time.Time
+	}
+	var hookEvents []hookEvent
 	hooks := &OpenAIWSIngressHooks{
+		InitialTurnStartedAt: expectedTurnStartedAt,
+		TurnStarted: func(turn int, startedAt time.Time) {
+			hooksMu.Lock()
+			hookEvents = append(hookEvents, hookEvent{name: "TurnStarted", turn: turn, startedAt: startedAt})
+			hooksMu.Unlock()
+		},
 		BeforeTurn: func(int) error {
 			hooksMu.Lock()
 			beforeTurnCalls++
 			hooksMu.Unlock()
 			return nil
 		},
-		AfterTurn: func(int, *OpenAIForwardResult, error) {
+		AfterTurn: func(turn int, _ *OpenAIForwardResult, _ error) {
 			hooksMu.Lock()
-			afterTurnCalls++
+			hookEvents = append(hookEvents, hookEvent{name: "AfterTurn", turn: turn})
 			hooksMu.Unlock()
 		},
 	}
@@ -120,9 +127,109 @@ func TestPassthroughIngressNeverCallsBeforeTurn(t *testing.T) {
 	}

 	hooksMu.Lock()
-	gotBefore, gotAfter := beforeTurnCalls, afterTurnCalls
+	gotBefore := beforeTurnCalls
+	gotEvents := append([]hookEvent(nil), hookEvents...)
 	hooksMu.Unlock()

-	require.Zero(t, gotBefore, "透传 ingress 没有 turn 起始回调，BeforeTurn 不应被调用")
-	require.Positive(t, gotAfter, "透传 ingress 仍应回调 AfterTurn 提交用量")
+	require.Zero(t, gotBefore, "透传 ingress 不应调用 BeforeTurn")
+	require.GreaterOrEqual(t, len(gotEvents), 2, "透传 ingress 应报告 TurnStarted 和 AfterTurn")
+	require.Equal(t, "TurnStarted", gotEvents[0].name)
+	require.Equal(t, expectedTurnStartedAt, gotEvents[0].startedAt, "TurnStarted 必须携带入口冻结的首轮开始时刻")
+	require.Equal(t, "AfterTurn", gotEvents[1].name)
+	require.Equal(t, gotEvents[0].turn, gotEvents[1].turn, "TurnStarted 后应提交同一 turn 的 AfterTurn")
+}
+
+func TestPassthroughIngressFreezesSubsequentTurnBeforeRequestPolicy(t *testing.T) {
+	testPassthroughIngressFreezesSubsequentTurnBeforeRequestPolicy(t, coderws.MessageText)
+}
+
+func TestPassthroughIngressFreezesBinarySubsequentTurnBeforeRequestPolicy(t *testing.T) {
+	testPassthroughIngressFreezesSubsequentTurnBeforeRequestPolicy(t, coderws.MessageBinary)
+}
+
+func testPassthroughIngressFreezesSubsequentTurnBeforeRequestPolicy(t *testing.T, secondMessageType coderws.MessageType) {
+	t.Helper()
+	gin.SetMode(gin.TestMode)
+	controlCtx, cancelControl := context.WithCancelCause(context.Background())
+	defer cancelControl(context.Canceled)
+
+	upstream := newStagedPassthroughConn()
+	upstream.Send(`{"type":"response.completed","response":{"id":"resp_first","model":"gpt-5.1","usage":{"input_tokens":1,"output_tokens":1}}}`)
+
+	type turnStart struct {
+		turn      int
+		startedAt time.Time
+	}
+	turnStarts := make(chan turnStart, 2)
+	beforeRequestEntered := make(chan time.Time, 1)
+	releaseBeforeRequest := make(chan struct{})
+	hooks := &OpenAIWSIngressHooks{
+		InitialTurnStartedAt: time.Now(),
+		TurnStarted: func(turn int, startedAt time.Time) {
+			turnStarts <- turnStart{turn: turn, startedAt: startedAt}
+		},
+		BeforeRequest: func(turn int, _ []byte, _ string) error {
+			if turn == 2 {
+				beforeRequestEntered <- time.Now()
+				<-releaseBeforeRequest
+			}
+			return nil
+		},
+	}
+
+	server, serverErr := startPassthroughHookRecordingServer(
+		t,
+		controlCtx,
+		newPassthroughLifecycleService(passthroughLifecycleConfig(), upstream),
+		passthroughLifecycleAccount(),
+		hooks,
+	)
+	defer server.Close()
+	clientConn := dialPassthroughLifecycleClient(t, server)
+	defer func() { _ = clientConn.CloseNow() }()
+
+	require.Equal(t, "response.create", gjson.GetBytes(requirePassthroughUpstreamWrite(t, upstream, 3*time.Second), "type").String())
+	firstCompleted, err := readPassthroughLifecycleFrame(t, clientConn, 3*time.Second)
+	require.NoError(t, err)
+	require.Equal(t, "resp_first", gjson.GetBytes(firstCompleted, "response.id").String())
+	select {
+	case first := <-turnStarts:
+		require.Equal(t, 1, first.turn)
+	case <-time.After(time.Second):
+		t.Fatal("first turn start was not reported")
+	}
+
+	writeCtx, cancelWrite := context.WithTimeout(context.Background(), 3*time.Second)
+	err = clientConn.Write(writeCtx, secondMessageType, []byte(`{"type":"response.create","model":"gpt-5.1","previous_response_id":"resp_first"}`))
+	cancelWrite()
+	require.NoError(t, err)
+
+	var policyEnteredAt time.Time
+	select {
+	case policyEnteredAt = <-beforeRequestEntered:
+	case <-time.After(time.Second):
+		t.Fatal("second turn did not enter BeforeRequest")
+	}
+	close(releaseBeforeRequest)
+	require.Equal(t, "response.create", gjson.GetBytes(requirePassthroughUpstreamWrite(t, upstream, 3*time.Second), "type").String())
+	upstream.Send(`{"type":"response.completed","response":{"id":"resp_second","model":"gpt-5.1","usage":{"input_tokens":1,"output_tokens":1}}}`)
+	secondCompleted, err := readPassthroughLifecycleFrame(t, clientConn, 3*time.Second)
+	require.NoError(t, err)
+	require.Equal(t, "resp_second", gjson.GetBytes(secondCompleted, "response.id").String())
+
+	select {
+	case second := <-turnStarts:
+		require.Equal(t, 2, second.turn)
+		require.False(t, second.startedAt.After(policyEnteredAt), "第二轮开始时刻必须在 BeforeRequest 策略执行前冻结")
+	case <-time.After(time.Second):
+		t.Fatal("second turn start was not reported")
+	}
+
+	_ = clientConn.CloseNow()
+	cancelControl(context.Canceled)
+	select {
+	case <-serverErr:
+	case <-time.After(3 * time.Second):
+		t.Fatal("passthrough ingress did not exit")
+	}
 }
@@ -50,6 +50,7 @@ type RelayTurnResult struct {
 	Usage                 Usage
 	RequestID             string
 	TerminalEventType     string
+	StartedAt             time.Time
 	Duration              time.Duration
 	FirstTokenMs          *int
 }
@@ -65,6 +66,8 @@ type RelayOptions struct {
 	WriteTimeout                    time.Duration
 	IdleTimeout                     time.Duration
 	UpstreamDrainTimeout            time.Duration
+	FirstTurnStartedAt              time.Time
+	TakeNextTurnStartedAt           func() time.Time
 	FirstMessageType                coderws.MessageType
 	FirstMessageSent                bool
 	StartClientAfterFirstDownstream bool
@@ -93,6 +96,7 @@ type relayState struct {
 	usage             Usage
 	requestModelMu    sync.RWMutex
 	requestModel      string
+	pendingTurnStart  atomic.Pointer[time.Time]
 	lastResponseID    string
 	lastResponseModel string
 	responseConflict  bool
@@ -114,6 +118,7 @@ type observedUpstreamEvent struct {
 	eventType        string
 	responseID       string
 	usage            Usage
+	startedAt        time.Time
 	responseModel    string
 	responseConflict bool
 	duration         time.Duration
@@ -161,6 +166,13 @@ func Relay(
 	}
 	startAt := nowFn()
 	state := &relayState{requestModel: result.RequestModel}
+	if isClientResponseCreateFrame(firstMessageType, firstClientMessage) {
+		firstTurnStartedAt := options.FirstTurnStartedAt
+		if firstTurnStartedAt.IsZero() {
+			firstTurnStartedAt = startAt
+		}
+		state.setPendingTurnStartedAt(firstTurnStartedAt)
+	}
 	onTrace := options.OnTrace

 	relayCtx, relayCancel := context.WithCancel(ctx)
@@ -178,8 +190,16 @@ func Relay(
 		return upstreamConn.WriteFrame(writeCtx, msgType, payload)
 	}
 	writeClientFrameUpstream := func(msgType coderws.MessageType, payload []byte) error {
-		if msgType == coderws.MessageText && strings.TrimSpace(gjson.GetBytes(payload, "type").String()) == "response.create" {
+		if isClientResponseCreateFrame(msgType, payload) {
 			state.setRequestModel(strings.TrimSpace(gjson.GetBytes(payload, "model").String()))
+			turnStartedAt := time.Time{}
+			if options.TakeNextTurnStartedAt != nil {
+				turnStartedAt = options.TakeNextTurnStartedAt()
+			}
+			if turnStartedAt.IsZero() {
+				turnStartedAt = nowFn()
+			}
+			state.setPendingTurnStartedAt(turnStartedAt)
 		}
 		return writeUpstream(msgType, payload)
 	}
@@ -412,6 +432,13 @@ func Relay(
 	return result, nil
 }

+func isClientResponseCreateFrame(msgType coderws.MessageType, payload []byte) bool {
+	if msgType != coderws.MessageText && msgType != coderws.MessageBinary {
+		return false
+	}
+	return strings.TrimSpace(gjson.GetBytes(payload, "type").String()) == "response.create"
+}
+
 func runClientToUpstream(
 	ctx context.Context,
 	clientConn FrameConn,
@@ -724,6 +751,7 @@ func observeUpstreamMessage(
 			if duration < 0 {
 				duration = 0
 			}
+			observed.startedAt = turnTiming.startAt
 			observed.duration = duration
 			observed.firstToken = openAIWSRelayCloneIntPtr(turnTiming.firstTokenMs)
 		}
@@ -754,6 +782,7 @@ func emitTurnComplete(
 		Usage:                 observed.usage,
 		RequestID:             responseID,
 		TerminalEventType:     observed.eventType,
+		StartedAt:             observed.startedAt,
 		Duration:              observed.duration,
 		FirstTokenMs:          openAIWSRelayCloneIntPtr(observed.firstToken),
 	})
@@ -815,7 +844,11 @@ func openAIWSRelayGetOrInitTurnTiming(state *relayState, responseID string, now
 	}
 	timing, ok := state.turnTimingByID[responseID]
 	if !ok || timing == nil || timing.startAt.IsZero() {
-		timing = &relayTurnTiming{startAt: now}
+		startAt := state.consumePendingTurnStartedAt()
+		if startAt.IsZero() {
+			startAt = now
+		}
+		timing = &relayTurnTiming{startAt: startAt}
 		state.turnTimingByID[responseID] = timing
 		state.activeTurn = timing
 		return timing
@@ -823,6 +856,25 @@ func openAIWSRelayGetOrInitTurnTiming(state *relayState, responseID string, now
 	return timing
 }

+func (s *relayState) setPendingTurnStartedAt(startedAt time.Time) {
+	if s == nil || startedAt.IsZero() {
+		return
+	}
+	startedAtCopy := startedAt
+	s.pendingTurnStart.Store(&startedAtCopy)
+}
+
+func (s *relayState) consumePendingTurnStartedAt() time.Time {
+	if s == nil {
+		return time.Time{}
+	}
+	startedAt := s.pendingTurnStart.Swap(nil)
+	if startedAt == nil {
+		return time.Time{}
+	}
+	return *startedAt
+}
+
 func openAIWSRelayDeleteTurnTiming(state *relayState, responseID string) (relayTurnTiming, bool) {
 	if state == nil || state.turnTimingByID == nil {
 		return relayTurnTiming{}, false
@@ -565,6 +565,143 @@ func TestRelay_OnTurnComplete_ProvidesTurnMetrics(t *testing.T) {
 	require.Greater(t, result.Duration.Milliseconds(), int64(0))
 }

+func TestRelay_OnTurnComplete_UsesResponseCreateTimeAcrossPricingBoundary(t *testing.T) {
+	t.Parallel()
+
+	clientConn := newPassthroughTestFrameConn(nil, false)
+	upstreamConn := newPassthroughTestFrameConn([]passthroughTestFrame{
+		{
+			msgType: coderws.MessageText,
+			payload: []byte(`{"type":"response.completed","response":{"id":"resp_boundary","usage":{"input_tokens":1,"output_tokens":1}}}`),
+		},
+	}, true)
+
+	responseCreateAt := time.Date(2026, time.August, 17, 9, 59, 59, 0, time.UTC)
+	upstreamResponseAt := responseCreateAt.Add(time.Second)
+	var nowCalls atomic.Int64
+	nowFn := func() time.Time {
+		if nowCalls.Add(1) == 1 {
+			return responseCreateAt
+		}
+		return upstreamResponseAt
+	}
+
+	var turn RelayTurnResult
+	_, relayExit := Relay(
+		context.Background(),
+		clientConn,
+		upstreamConn,
+		[]byte(`{"type":"response.create","model":"gpt-5.3-codex","input":[]}`),
+		RelayOptions{
+			Now:            nowFn,
+			OnTurnComplete: func(current RelayTurnResult) { turn = current },
+		},
+	)
+
+	require.Nil(t, relayExit)
+	require.Equal(t, responseCreateAt, turn.StartedAt)
+}
+
+func TestRelay_OnTurnComplete_UsesExplicitFirstTurnStartedAt(t *testing.T) {
+	t.Parallel()
+
+	clientConn := newPassthroughTestFrameConn(nil, false)
+	upstreamConn := newPassthroughTestFrameConn([]passthroughTestFrame{
+		{
+			msgType: coderws.MessageText,
+			payload: []byte(`{"type":"response.completed","response":{"id":"resp_initial_boundary","usage":{"input_tokens":1,"output_tokens":1}}}`),
+		},
+	}, true)
+
+	responseCreateAt := time.Date(2026, time.August, 17, 9, 59, 59, 0, time.UTC)
+	relayStartedAt := responseCreateAt.Add(time.Second)
+	var turn RelayTurnResult
+	_, relayExit := Relay(
+		context.Background(),
+		clientConn,
+		upstreamConn,
+		[]byte(`{"type":"response.create","model":"gpt-5.3-codex","input":[]}`),
+		RelayOptions{
+			FirstTurnStartedAt: responseCreateAt,
+			Now:                func() time.Time { return relayStartedAt },
+			OnTurnComplete:     func(current RelayTurnResult) { turn = current },
+		},
+	)
+
+	require.Nil(t, relayExit)
+	require.Equal(t, responseCreateAt, turn.StartedAt)
+}
+
+func TestRelay_OnTurnComplete_UsesSubsequentResponseCreateTimeAcrossPricingBoundary(t *testing.T) {
+	t.Parallel()
+
+	clientConn := newPassthroughTestFrameConn(nil, false)
+	upstreamConn := newPassthroughTestFrameConn(nil, false)
+	firstTurnAt := time.Date(2026, time.August, 17, 9, 0, 0, 0, time.UTC)
+	secondTurnAt := time.Date(2026, time.August, 17, 9, 59, 59, 0, time.UTC)
+	secondResponseAt := secondTurnAt.Add(time.Second)
+	var clock atomic.Int64
+	clock.Store(firstTurnAt.UnixNano())
+
+	turns := make(chan RelayTurnResult, 2)
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		_, _ = Relay(
+			ctx,
+			clientConn,
+			upstreamConn,
+			[]byte(`{"type":"response.create","model":"gpt-5.3-codex","input":[]}`),
+			RelayOptions{
+				Now: func() time.Time { return time.Unix(0, clock.Load()).UTC() },
+				OnTurnComplete: func(current RelayTurnResult) {
+					turns <- current
+				},
+			},
+		)
+	}()
+
+	require.Eventually(t, func() bool { return len(upstreamConn.Writes()) == 1 }, time.Second, time.Millisecond)
+	upstreamConn.readCh <- passthroughTestFrame{
+		msgType: coderws.MessageText,
+		payload: []byte(`{"type":"response.completed","response":{"id":"resp_first","usage":{"input_tokens":1,"output_tokens":1}}}`),
+	}
+	select {
+	case <-turns:
+	case <-time.After(time.Second):
+		t.Fatal("first turn did not complete")
+	}
+
+	clock.Store(secondTurnAt.UnixNano())
+	clientConn.readCh <- passthroughTestFrame{
+		msgType: coderws.MessageText,
+		payload: []byte(`{"type":"response.create","model":"gpt-5.3-codex","input":[]}`),
+	}
+	require.Eventually(t, func() bool { return len(upstreamConn.Writes()) == 2 }, time.Second, time.Millisecond)
+	clock.Store(secondResponseAt.UnixNano())
+	upstreamConn.readCh <- passthroughTestFrame{
+		msgType: coderws.MessageText,
+		payload: []byte(`{"type":"response.completed","response":{"id":"resp_second","usage":{"input_tokens":1,"output_tokens":1}}}`),
+	}
+
+	var secondTurn RelayTurnResult
+	select {
+	case secondTurn = <-turns:
+	case <-time.After(time.Second):
+		t.Fatal("second turn did not complete")
+	}
+	require.Equal(t, secondTurnAt, secondTurn.StartedAt)
+
+	cancel()
+	select {
+	case <-done:
+	case <-time.After(time.Second):
+		t.Fatal("relay did not stop after cancellation")
+	}
+}
+
 func TestRelay_BinaryFramePassthrough(t *testing.T) {
 	t.Parallel()

@@ -915,6 +915,7 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(

 	completedTurns := atomic.Int32{}
 	turnLifecycle := newOpenAIWSPassthroughTurnLifecycle(true)
+	var acceptedTurnStartedAt atomic.Pointer[time.Time]
 	clientFrameConn := &openAIWSClientFrameConn{
 		conn:                 clientConn,
 		controlCtx:           ctx,
@@ -936,13 +937,15 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 		// capturedSessionModel 的读写都发生在该 goroutine 内，因此无需
 		// 加锁/原子化。
 		filter: func(msgType coderws.MessageType, payload []byte) (out []byte, blocked *OpenAIFastBlockedError, filterErr error) {
-			if msgType != coderws.MessageText {
+			if msgType != coderws.MessageText && msgType != coderws.MessageBinary {
 				return payload, nil, nil
 			}
 			eventType := strings.TrimSpace(gjson.GetBytes(payload, "type").String())
 			isResponseCreate := eventType == "response.create"
+			responseCreateAt := time.Time{}
 			acceptedTurn := false
 			if isResponseCreate {
+				responseCreateAt = time.Now()
 				if !turnLifecycle.beginResponseCreate(clientFrameConn.markTurnStarted) {
 					err := errors.New("overlapping response.create is not supported")
 					return payload, nil, NewOpenAIWSClientCloseError(coderws.StatusPolicyViolation, err.Error(), err)
@@ -1035,6 +1038,8 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 			//     service_tier 时按 default 处理，billing 应如实反映。
 			if policyErr == nil && blocked == nil && isResponseCreate {
 				usageMeta.updateFromResponseCreate(out, model, requestModelForThisFrame)
+				responseCreateAtCopy := responseCreateAt
+				acceptedTurnStartedAt.Store(&responseCreateAtCopy)
 				acceptedTurn = true
 			}
 			return out, blocked, policyErr
@@ -1072,7 +1077,7 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 			if readErr != nil {
 				return msgType, payload, readErr
 			}
-			if msgType == coderws.MessageText && strings.TrimSpace(gjson.GetBytes(payload, "type").String()) == "response.create" {
+			if (msgType == coderws.MessageText || msgType == coderws.MessageBinary) && strings.TrimSpace(gjson.GetBytes(payload, "type").String()) == "response.create" {
 				return msgType, payload, nil
 			}
 			if writeErr := upstreamFrameConn.WriteFrame(readCtx, msgType, payload); writeErr != nil {
@@ -1081,13 +1086,25 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 		}
 	}

+	firstTurnStartedAt := time.Time{}
+	if hooks != nil {
+		firstTurnStartedAt = hooks.InitialTurnStartedAt
+	}
 	relayResult, relayExit := openaiwsv2.RunEntry(openaiwsv2.EntryInput{
 		Ctx:                ctx,
 		ClientConn:         policyClientConn,
 		UpstreamConn:       relayUpstreamFrameConn,
 		FirstClientMessage: firstClientMessage,
 		Options: openaiwsv2.RelayOptions{
-			WriteTimeout: s.openAIWSWriteTimeout(),
+			WriteTimeout:       s.openAIWSWriteTimeout(),
+			FirstTurnStartedAt: firstTurnStartedAt,
+			TakeNextTurnStartedAt: func() time.Time {
+				startedAt := acceptedTurnStartedAt.Swap(nil)
+				if startedAt == nil {
+					return time.Time{}
+				}
+				return *startedAt
+			},
 			// Passthrough idle is enforced only after a completed turn by
 			// clientFrameConn. The relay-wide activity watchdog would also
 			// terminate a healthy active upstream turn.
@@ -1105,6 +1122,9 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 			},
 			OnTurnComplete: func(turn openaiwsv2.RelayTurnResult) {
 				turnNo := int(completedTurns.Add(1))
+				if hooks != nil && hooks.TurnStarted != nil && !turn.StartedAt.IsZero() {
+					hooks.TurnStarted(turnNo, turn.StartedAt)
+				}
 				turnRequestModel, turnUpstreamModel := usageMeta.turnModels(turn.RequestModel)
 				turnResult := &OpenAIForwardResult{
 					RequestID: turn.RequestID,
@@ -1265,6 +1285,9 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 		)
 		// 正常路径按 terminal 事件逐 turn 已回调；仅在零 turn 场景兜底回调一次。
 		if turnCount == 0 && hooks != nil && hooks.AfterTurn != nil {
+			if hooks.TurnStarted != nil {
+				hooks.TurnStarted(1, time.Now().Add(-result.Duration))
+			}
 			hooks.AfterTurn(1, result, nil)
 		}
 		return nil
@@ -1331,6 +1354,9 @@ func (s *OpenAIGatewayService) proxyResponsesWebSocketV2Passthrough(
 		relayExit.WroteDownstream,
 	)
 	if hooks != nil && hooks.AfterTurn != nil {
+		if hooks.TurnStarted != nil {
+			hooks.TurnStarted(turnCount+1, time.Now().Add(-result.Duration))
+		}
 		hooks.AfterTurn(turnCount+1, nil, turnErr)
 	}
 	return turnErr
@@ -0,0 +1,5 @@
+ALTER TABLE channel_model_pricing
+    ADD COLUMN IF NOT EXISTS time_pricing JSONB NULL;
+
+COMMENT ON COLUMN channel_model_pricing.time_pricing IS
+    'Optional IANA timezone and recurring daily multiplier periods for channel token pricing';
@@ -21,6 +21,17 @@ export interface PricingInterval {
  sort_order: number
 }

+export interface ChannelTimePricingPeriod {
+  start_time: string
+  end_time: string
+  multiplier: number
+}
+
+export interface ChannelTimePricing {
+  timezone: string
+  periods: ChannelTimePricingPeriod[]
+}
+
 export interface ChannelModelPricing {
  id?: number
  platform: string
@@ -34,6 +45,7 @@ export interface ChannelModelPricing {
  image_output_price: number | null
  per_request_price: number | null
  intervals: PricingInterval[]
+  time_pricing: ChannelTimePricing | null
 }

 export interface AccountStatsPricingRule {
@@ -87,7 +87,12 @@
            </label>
            <Select
              :modelValue="entry.billing_mode"
-              @update:modelValue="emit('update', { ...entry, billing_mode: $event as BillingMode, intervals: [] })"
+              @update:modelValue="emit('update', {
+                ...entry,
+                billing_mode: $event as BillingMode,
+                intervals: [],
+                time_pricing: { ...entry.time_pricing, periods: [] },
+              })"
              :options="billingModeOptions"
              class="mt-1"
            />
@@ -156,6 +161,12 @@
              />
            </div>
          </div>
+
+          <TimePricingSection
+            v-if="enableTimePricing"
+            :model-value="entry.time_pricing"
+            @update:model-value="emit('update', { ...entry, time_pricing: $event })"
+          />
        </div>

        <!-- Per-request mode -->
@@ -238,6 +249,7 @@ import Select from '@/components/common/Select.vue'
 import Icon from '@/components/icons/Icon.vue'
 import IntervalRow from './IntervalRow.vue'
 import ModelTagInput from './ModelTagInput.vue'
+import TimePricingSection from './TimePricingSection.vue'
 import type { PricingFormEntry, IntervalFormEntry } from './types'
 import { perTokenToMTok, getPlatformTagClass } from './types'
 import type { BillingMode } from '@/api/admin/channels'
@@ -249,8 +261,10 @@ const props = withDefaults(defineProps<{
  entry: PricingFormEntry
  platform?: string
  hideTokenIntervals?: boolean
+  enableTimePricing?: boolean
 }>(), {
  hideTokenIntervals: false,
+  enableTimePricing: false,
 })

 const emit = defineEmits<{
@@ -0,0 +1,161 @@
+<template>
+  <section class="mt-3 border-t border-gray-200 pt-3 dark:border-dark-600">
+    <div class="flex flex-col gap-2 sm:flex-row sm:items-end sm:justify-between">
+      <div class="min-w-0 flex-1 sm:max-w-sm">
+        <label class="block text-xs font-medium text-gray-500 dark:text-gray-400">
+          {{ t('admin.channels.form.timePricing') }}
+        </label>
+        <label class="mt-2 block text-xs text-gray-400">
+          {{ t('admin.channels.form.timezone') }}
+        </label>
+        <Select
+          :model-value="modelValue.timezone"
+          :options="timezoneOptions"
+          :aria-label="t('admin.channels.form.timezone')"
+          searchable
+          creatable
+          class="mt-1 w-full"
+          @update:model-value="updateTimezone"
+        />
+      </div>
+      <button
+        type="button"
+        class="self-start text-xs text-primary-600 hover:text-primary-700 sm:self-end sm:pb-2"
+        data-testid="add-time-period"
+        @click="addPeriod"
+      >
+        + {{ t('admin.channels.form.addTimePeriod') }}
+      </button>
+    </div>
+
+    <div v-if="modelValue.periods.length > 0" class="mt-3 space-y-3">
+      <div
+        v-for="(period, index) in modelValue.periods"
+        :key="index"
+        class="grid grid-cols-1 gap-2 border-t border-gray-200 pt-3 sm:grid-cols-[minmax(0,1fr)_minmax(0,1fr)_minmax(0,1fr)_2rem] sm:items-end dark:border-dark-600"
+      >
+        <div class="min-w-0">
+          <label :for="`${inputIdPrefix}-start-${index}`" class="block text-xs text-gray-400">
+            {{ t('admin.channels.form.startTime') }}
+          </label>
+          <input
+            :id="`${inputIdPrefix}-start-${index}`"
+            :value="period.start_time"
+            type="text"
+            inputmode="numeric"
+            maxlength="8"
+            placeholder="HH:mm:ss"
+            pattern="[0-9]{2}:[0-9]{2}:[0-9]{2}"
+            autocomplete="off"
+            class="input mt-1 w-full text-sm"
+            @input="updatePeriod(index, 'start_time', normalizeClockTime(($event.target as HTMLInputElement).value))"
+          />
+        </div>
+        <div class="min-w-0">
+          <label :for="`${inputIdPrefix}-end-${index}`" class="block text-xs text-gray-400">
+            {{ t('admin.channels.form.endTime') }}
+          </label>
+          <input
+            :id="`${inputIdPrefix}-end-${index}`"
+            :value="period.end_time"
+            type="text"
+            inputmode="numeric"
+            maxlength="8"
+            placeholder="HH:mm:ss"
+            pattern="[0-9]{2}:[0-9]{2}:[0-9]{2}"
+            autocomplete="off"
+            class="input mt-1 w-full text-sm"
+            @input="updatePeriod(index, 'end_time', normalizeClockTime(($event.target as HTMLInputElement).value))"
+          />
+        </div>
+        <div class="min-w-0">
+          <label :for="`${inputIdPrefix}-multiplier-${index}`" class="block text-xs text-gray-400">
+            {{ t('admin.channels.form.multiplier') }}
+          </label>
+          <input
+            :id="`${inputIdPrefix}-multiplier-${index}`"
+            :value="period.multiplier"
+            type="number"
+            min="0.01"
+            step="0.01"
+            class="input mt-1 w-full text-sm"
+            @input="updatePeriod(index, 'multiplier', ($event.target as HTMLInputElement).value)"
+            @blur="formatMultiplier(index, ($event.target as HTMLInputElement).value)"
+          />
+        </div>
+        <button
+          type="button"
+          class="flex h-8 w-8 items-center justify-center rounded text-gray-400 hover:text-red-500"
+          :title="t('admin.channels.form.removeTimePeriod')"
+          :aria-label="t('admin.channels.form.removeTimePeriod')"
+          :data-testid="`remove-time-period-${index}`"
+          @click="removePeriod(index)"
+        >
+          <Icon name="trash" size="sm" />
+        </button>
+      </div>
+    </div>
+  </section>
+</template>
+
+<script setup lang="ts">
+import { getCurrentInstance } from 'vue'
+import { useI18n } from 'vue-i18n'
+import Select from '@/components/common/Select.vue'
+import Icon from '@/components/icons/Icon.vue'
+import {
+  COMMON_TIMEZONES,
+  formatTimezoneOffset,
+  isValidTimePricingMultiplier,
+  type TimePricingFormEntry,
+  type TimePricingPeriodFormEntry,
+} from './types'
+
+const { t } = useI18n()
+
+const props = defineProps<{ modelValue: TimePricingFormEntry }>()
+const emit = defineEmits<{ 'update:modelValue': [value: TimePricingFormEntry] }>()
+const inputIdPrefix = `time-pricing-${getCurrentInstance()?.uid}`
+
+const timezoneOptions = COMMON_TIMEZONES.map(value => {
+  const offset = formatTimezoneOffset(value)
+  return { value, label: offset ? `${value} (${offset})` : value }
+})
+
+function updateTimezone(value: string | number | boolean | null) {
+  emit('update:modelValue', { ...props.modelValue, timezone: String(value ?? '') })
+}
+
+function normalizeClockTime(value: string): string {
+  const normalized = value.replace(/：/g, ':')
+  return normalized === '24:00:00' ? '00:00:00' : normalized
+}
+
+function addPeriod() {
+  emit('update:modelValue', {
+    ...props.modelValue,
+    periods: [
+      ...props.modelValue.periods,
+      { start_time: '', end_time: '', multiplier: '1.00' },
+    ],
+  })
+}
+
+function updatePeriod(index: number, field: keyof TimePricingPeriodFormEntry, value: string) {
+  const periods = props.modelValue.periods.map((period, current) =>
+    current === index ? { ...period, [field]: value } : period)
+  emit('update:modelValue', { ...props.modelValue, periods })
+}
+
+function formatMultiplier(index: number, value: string) {
+  if (!isValidTimePricingMultiplier(value)) return
+  updatePeriod(index, 'multiplier', Number(value).toFixed(2))
+}
+
+function removePeriod(index: number) {
+  emit('update:modelValue', {
+    ...props.modelValue,
+    periods: props.modelValue.periods.filter((_period, current) => current !== index),
+  })
+}
+</script>
@@ -0,0 +1,71 @@
+import { shallowMount } from '@vue/test-utils'
+import { describe, expect, it, vi } from 'vitest'
+import PricingEntryCard from '../PricingEntryCard.vue'
+import type { PricingFormEntry } from '../types'
+
+vi.mock('vue-i18n', async importOriginal => ({
+  ...await importOriginal<typeof import('vue-i18n')>(),
+  useI18n: () => ({ t: (key: string) => key }),
+}))
+
+function createEntry(billingMode: PricingFormEntry['billing_mode'] = 'token'): PricingFormEntry {
+  return {
+    models: [],
+    billing_mode: billingMode,
+    input_price: null,
+    output_price: null,
+    cache_write_price: null,
+    cache_read_price: null,
+    image_input_price: null,
+    image_output_price: null,
+    per_request_price: null,
+    intervals: [],
+    time_pricing: {
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00', end_time: '12:00', multiplier: '2.00' }],
+    },
+  }
+}
+
+describe('PricingEntryCard time pricing visibility', () => {
+  it('is hidden by default', () => {
+    const wrapper = shallowMount(PricingEntryCard, {
+      props: { entry: createEntry() },
+    })
+
+    expect(wrapper.findComponent({ name: 'TimePricingSection' }).exists()).toBe(false)
+  })
+
+  it('is shown for token pricing when explicitly enabled', () => {
+    const wrapper = shallowMount(PricingEntryCard, {
+      props: { entry: createEntry(), enableTimePricing: true },
+    })
+
+    expect(wrapper.findComponent({ name: 'TimePricingSection' }).exists()).toBe(true)
+  })
+
+  it('is hidden for non-token pricing even when explicitly enabled', () => {
+    const wrapper = shallowMount(PricingEntryCard, {
+      props: { entry: createEntry('per_request'), enableTimePricing: true },
+    })
+
+    expect(wrapper.findComponent({ name: 'TimePricingSection' }).exists()).toBe(false)
+  })
+
+  it('clears time periods when changing billing mode', () => {
+    const entry = createEntry()
+    const wrapper = shallowMount(PricingEntryCard, {
+      props: { entry, enableTimePricing: true },
+    })
+
+    wrapper.findComponent({ name: 'Select' }).vm.$emit('update:modelValue', 'image')
+
+    expect(wrapper.emitted('update')?.[0]?.[0]).toEqual({
+      ...entry,
+      billing_mode: 'image',
+      intervals: [],
+      time_pricing: { timezone: 'Asia/Shanghai', periods: [] },
+    })
+    expect(entry.time_pricing.periods).toHaveLength(1)
+  })
+})
@@ -0,0 +1,183 @@
+import { mount } from '@vue/test-utils'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import TimePricingSection from '../TimePricingSection.vue'
+import { createDefaultTimePricingForm } from '../types'
+
+vi.mock('vue-i18n', async importOriginal => ({
+  ...await importOriginal<typeof import('vue-i18n')>(),
+  useI18n: () => ({ t: (key: string) => key }),
+}))
+
+const SelectStub = {
+  name: 'Select',
+  props: ['modelValue', 'options'],
+  emits: ['update:modelValue'],
+  template: '<button type="button" data-testid="timezone-select" />',
+}
+
+describe('TimePricingSection', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('adds a neutral period immutably', async () => {
+    const value = createDefaultTimePricingForm()
+    const wrapper = mount(TimePricingSection, {
+      props: { modelValue: value },
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    await wrapper.get('[data-testid="add-time-period"]').trigger('click')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]?.[0]).toEqual({
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '', end_time: '', multiplier: '1.00' }],
+    })
+    expect(value.periods).toHaveLength(0)
+  })
+
+  it('removes without mutating props', async () => {
+    const value = {
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }],
+    }
+    const wrapper = mount(TimePricingSection, {
+      props: { modelValue: value },
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    const removeButton = wrapper.get('[data-testid="remove-time-period-0"]')
+    expect(removeButton.attributes('title')).toBe('admin.channels.form.removeTimePeriod')
+    expect(removeButton.attributes('aria-label')).toBe('admin.channels.form.removeTimePeriod')
+    await removeButton.trigger('click')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]?.[0]).toEqual({
+      timezone: 'Asia/Shanghai',
+      periods: [],
+    })
+    expect(value.periods).toHaveLength(1)
+  })
+
+  it('uses locale-independent 24-hour second inputs', () => {
+    const value = {
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }],
+    }
+    const wrapper = mount(TimePricingSection, {
+      props: { modelValue: value },
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    const timeInputs = wrapper.findAll('input[inputmode="numeric"]')
+    expect(timeInputs).toHaveLength(2)
+    expect(timeInputs.every(input => input.attributes('type') === 'text')).toBe(true)
+    expect(timeInputs.every(input => input.attributes('maxlength') === '8')).toBe(true)
+    expect(timeInputs.every(input => input.attributes('placeholder') === 'HH:mm:ss')).toBe(true)
+  })
+
+  it('updates the timezone and normalizes full-width colons immutably', async () => {
+    const value = {
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }],
+    }
+    const wrapper = mount(TimePricingSection, {
+      props: { modelValue: value },
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    wrapper.getComponent(SelectStub).vm.$emit('update:modelValue', 'Europe/London')
+    await wrapper.get('input').setValue('10：30：15')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]?.[0]).toEqual({
+      ...value,
+      timezone: 'Europe/London',
+    })
+    expect(wrapper.emitted('update:modelValue')?.[1]?.[0]).toEqual({
+      ...value,
+      periods: [{ ...value.periods[0], start_time: '10:30:15' }],
+    })
+    expect(value).toEqual({
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }],
+    })
+  })
+
+  it('normalizes 24:00:00 to 00:00:00', async () => {
+    const value = {
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }],
+    }
+    const wrapper = mount(TimePricingSection, {
+      props: { modelValue: value },
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    await wrapper.get('input').setValue('24:00:00')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]?.[0]).toEqual({
+      ...value,
+      periods: [{ ...value.periods[0], start_time: '00:00:00' }],
+    })
+  })
+
+  it('formats only a valid positive multiplier on blur', async () => {
+    const value = {
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2' }],
+    }
+    const wrapper = mount(TimePricingSection, {
+      props: { modelValue: value },
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    const multiplier = wrapper.get('input[type="number"]')
+    expect(multiplier.attributes('min')).toBe('0.01')
+    expect(multiplier.attributes('step')).toBe('0.01')
+    await multiplier.trigger('blur')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]?.[0]).toEqual({
+      ...value,
+      periods: [{ ...value.periods[0], multiplier: '2.00' }],
+    })
+
+  })
+
+  it.each(['1.234', '1e2', '.5'])('keeps invalid multiplier %s unchanged on blur', async invalid => {
+    const value = {
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: invalid }],
+    }
+    const wrapper = mount(TimePricingSection, {
+      props: { modelValue: value },
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    await wrapper.get('input[type="number"]').trigger('blur')
+
+    expect(wrapper.emitted('update:modelValue')).toBeUndefined()
+    expect(value.periods[0].multiplier).toBe(invalid)
+  })
+
+  it('uses unique input ids across component instances', () => {
+    const value = {
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }],
+    }
+    const wrapper = mount({
+      components: { TimePricingSection },
+      data: () => ({ first: value, second: value }),
+      template: `
+        <div>
+          <TimePricingSection v-model="first" />
+          <TimePricingSection v-model="second" />
+        </div>
+      `,
+    }, {
+      global: { stubs: { Select: SelectStub, Icon: true } },
+    })
+
+    const ids = wrapper.findAll('input').map(input => input.attributes('id'))
+    expect(ids).toHaveLength(6)
+    expect(new Set(ids).size).toBe(ids.length)
+  })
+})
@@ -1,5 +1,14 @@
 import { describe, expect, it } from 'vitest'
-import { validateIntervals, type IntervalFormEntry } from '../types'
+import {
+  apiTimePricingToForm,
+  createDefaultTimePricingForm,
+  formTimePricingToAPI,
+  validateIntervals,
+  validateTimePricing,
+  type IntervalFormEntry,
+  type TimePricingFormEntry,
+  type TimePricingPeriodFormEntry,
+} from '../types'

 function makeInterval(over: Partial<IntervalFormEntry>): IntervalFormEntry {
  return {
@@ -81,3 +90,67 @@ describe('validateIntervals', () => {
    })
  })
 })
+
+describe('time pricing', () => {
+  it('uses a disabled Shanghai default', () => {
+    const form = createDefaultTimePricingForm()
+    expect(form).toEqual({ timezone: 'Asia/Shanghai', periods: [] })
+    expect(formTimePricingToAPI(form)).toBeNull()
+  })
+
+  it('round-trips and formats multiplier', () => {
+    const form = apiTimePricingToForm({
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00', end_time: '12:00', multiplier: 2 }],
+    })
+    expect(form.periods[0]).toEqual({
+      start_time: '09:00:00',
+      end_time: '12:00:00',
+      multiplier: '2.00',
+    })
+    expect(formTimePricingToAPI(form)).toEqual({
+      timezone: 'Asia/Shanghai',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: 2 }],
+    })
+  })
+
+  it.each([
+    ['separated', [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }, { start_time: '14:00:00', end_time: '18:00:00', multiplier: '2.00' }], null],
+    ['adjacent', [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }, { start_time: '12:00:00', end_time: '14:00:00', multiplier: '1.50' }], null],
+    ['midnight split', [{ start_time: '22:00:00', end_time: '00:00:00', multiplier: '2.00' }, { start_time: '00:00:00', end_time: '02:00:00', multiplier: '2.00' }], null],
+    ['overlap by one second', [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }, { start_time: '11:59:59', end_time: '14:00:00', multiplier: '2.00' }], 'overlap'],
+    ['cross midnight', [{ start_time: '22:00:00', end_time: '02:00:00', multiplier: '2.00' }], 'range'],
+    ['equal midnight', [{ start_time: '00:00:00', end_time: '00:00:00', multiplier: '2.00' }], 'range'],
+    ['missing seconds', [{ start_time: '09:00', end_time: '12:00', multiplier: '2.00' }], 'format'],
+    ['zero', [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '0.00' }], 'multiplier'],
+    ['three decimals', [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '1.001' }], 'multiplier'],
+  ])('%s', (_name, periods, errorKey) => {
+    const result = validateTimePricing({
+      timezone: 'Asia/Shanghai',
+      periods: periods as TimePricingPeriodFormEntry[],
+    }, t)
+    if (errorKey === null) expect(result).toBeNull()
+    else expect(result).toContain(String(errorKey))
+  })
+
+  it('rejects non-IANA timezone', () => {
+    expect(validateTimePricing({
+      timezone: 'UTC+8',
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }],
+    }, t)).toContain('timezone')
+  })
+
+  it.each([
+    ['missing', undefined],
+    ['blank', '   '],
+  ])('rejects a %s timezone without throwing during conversion', (_name, timezone) => {
+    const form = {
+      timezone,
+      periods: [{ start_time: '09:00:00', end_time: '12:00:00', multiplier: '2.00' }],
+    } as unknown as TimePricingFormEntry
+
+    expect(validateTimePricing(form, t)).toContain('timezone')
+    expect(() => formTimePricingToAPI(form)).not.toThrow()
+    expect(formTimePricingToAPI(form)?.timezone).toBe('')
+  })
+})
@@ -1,4 +1,4 @@
-import type { BillingMode, PricingInterval } from '@/api/admin/channels'
+import type { BillingMode, ChannelTimePricing, PricingInterval } from '@/api/admin/channels'

 type TranslateFn = (key: string, params?: Record<string, unknown>) => string

@@ -25,6 +25,134 @@ export interface PricingFormEntry {
  image_output_price: number | string | null
  per_request_price: number | string | null
  intervals: IntervalFormEntry[]
+  time_pricing: TimePricingFormEntry
+}
+
+export interface TimePricingPeriodFormEntry {
+  start_time: string
+  end_time: string
+  multiplier: number | string
+}
+
+export interface TimePricingFormEntry {
+  timezone: string
+  periods: TimePricingPeriodFormEntry[]
+}
+
+export const DEFAULT_TIME_PRICING_TIMEZONE = 'Asia/Shanghai'
+
+const CLOCK_TIME = /^(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d$/
+const LEGACY_CLOCK_TIME = /^(?:[01]\d|2[0-3]):[0-5]\d$/
+const TWO_DECIMAL_MULTIPLIER = /^\d+(?:\.\d{1,2})?$/
+
+export function isValidTimePricingMultiplier(value: number | string): boolean {
+  const multiplier = String(value)
+  const numericValue = Number(multiplier)
+  return TWO_DECIMAL_MULTIPLIER.test(multiplier) &&
+    Number.isFinite(numericValue) && numericValue > 0
+}
+
+export const COMMON_TIMEZONES = [
+  'UTC', 'Asia/Shanghai', 'Asia/Tokyo', 'Asia/Seoul', 'Asia/Singapore', 'Asia/Kolkata',
+  'Australia/Sydney', 'Europe/London', 'Europe/Paris', 'Europe/Berlin',
+  'America/New_York', 'America/Chicago', 'America/Denver', 'America/Los_Angeles',
+  'America/Toronto', 'America/Sao_Paulo', 'Pacific/Auckland', 'Pacific/Honolulu',
+]
+
+export function createDefaultTimePricingForm(): TimePricingFormEntry {
+  return { timezone: DEFAULT_TIME_PRICING_TIMEZONE, periods: [] }
+}
+
+export function apiTimePricingToForm(value: ChannelTimePricing | null | undefined): TimePricingFormEntry {
+  if (!value) return createDefaultTimePricingForm()
+  return {
+    timezone: value.timezone || DEFAULT_TIME_PRICING_TIMEZONE,
+    periods: (value.periods || []).map(period => ({
+      start_time: LEGACY_CLOCK_TIME.test(period.start_time) ? `${period.start_time}:00` : period.start_time,
+      end_time: LEGACY_CLOCK_TIME.test(period.end_time) ? `${period.end_time}:00` : period.end_time,
+      multiplier: Number(period.multiplier).toFixed(2),
+    })),
+  }
+}
+
+export function formTimePricingToAPI(value: TimePricingFormEntry | null | undefined): ChannelTimePricing | null {
+  if (!value?.periods?.length) return null
+  const timezone = typeof value.timezone === 'string' ? value.timezone.trim() : ''
+  return {
+    timezone,
+    periods: value.periods.map(period => ({
+      start_time: period.start_time,
+      end_time: period.end_time,
+      multiplier: Number(period.multiplier),
+    })),
+  }
+}
+
+function timeToSeconds(time: string, isEnd: boolean): number {
+  if (isEnd && time === '00:00:00') return 24 * 60 * 60
+  const [hours, minutes, seconds] = time.split(':').map(Number)
+  return hours * 60 * 60 + minutes * 60 + seconds
+}
+
+function timePricingValidationMessage(t: TranslateFn, key: string): string {
+  return t(`admin.channels.timePricingValidation.${key}`)
+}
+
+export function validateTimePricing(value: TimePricingFormEntry, t: TranslateFn): string | null {
+  if (!value?.periods?.length) return null
+
+  if (typeof value.timezone !== 'string' || value.timezone.trim() === '') {
+    return timePricingValidationMessage(t, 'timezone')
+  }
+  const timezone = value.timezone.trim()
+
+  try {
+    new Intl.DateTimeFormat('en-US', { timeZone: timezone })
+  } catch {
+    return timePricingValidationMessage(t, 'timezone')
+  }
+
+  const periods = [] as { start: number, end: number }[]
+  for (const period of value.periods) {
+    if (!CLOCK_TIME.test(period.start_time) || !CLOCK_TIME.test(period.end_time)) {
+      return timePricingValidationMessage(t, 'format')
+    }
+    if (period.start_time === period.end_time) {
+      return timePricingValidationMessage(t, 'range')
+    }
+
+    const start = timeToSeconds(period.start_time, false)
+    const end = timeToSeconds(period.end_time, true)
+    if (start >= end) return timePricingValidationMessage(t, 'range')
+
+    if (!isValidTimePricingMultiplier(period.multiplier)) {
+      return timePricingValidationMessage(t, 'multiplier')
+    }
+    periods.push({ start, end })
+  }
+
+  const sorted = [...periods].sort((a, b) => a.start - b.start)
+  for (let i = 1; i < sorted.length; i++) {
+    if (sorted[i].start < sorted[i - 1].end) {
+      return timePricingValidationMessage(t, 'overlap')
+    }
+  }
+  return null
+}
+
+export function formatTimezoneOffset(timezone: string, at = new Date()): string {
+  try {
+    const part = new Intl.DateTimeFormat('en-US', {
+      timeZone: timezone,
+      timeZoneName: 'shortOffset',
+    }).formatToParts(at).find(item => item.type === 'timeZoneName')?.value
+    if (!part || part === 'GMT') return 'UTC+00:00'
+    const match = /^GMT([+-])(\d{1,2})(?::(\d{2}))?$/.exec(part)
+    if (!match) return ''
+    return `UTC${match[1]}${match[2].padStart(2, '0')}:${match[3] || '00'}`
+  } catch {
+    return ''
+  }
 }

 // 价格转换：后端存 per-token，前端显示 per-MTok ($/1M tokens)
@@ -80,6 +80,13 @@ export default {
          perRequestPrice: 'per-request price'
        }
      },
+      timePricingValidation: {
+        timezone: 'Select a valid IANA time zone',
+        format: 'Start and end times must use HH:mm:ss format',
+        range: 'Start time must be earlier than end time; split ranges across midnight',
+        overlap: 'Time periods must not overlap',
+        multiplier: 'Multiplier must be greater than 0 with at most two decimal places'
+      },
      deleteConfirm: 'Are you sure you want to delete channel "{name}"? This cannot be undone.',
      columns: {
        name: 'Name',
@@ -122,6 +129,13 @@ export default {
        imageOutputPrice: 'Image Output Price',
        pricePlaceholder: 'Default',
        intervals: 'Context Intervals (optional)',
+        timePricing: 'Time-based pricing (optional)',
+        timezone: 'Time zone',
+        addTimePeriod: 'Add period',
+        startTime: 'Start time',
+        endTime: 'End time',
+        multiplier: 'Multiplier',
+        removeTimePeriod: 'Remove period',
        minTokens: 'Min',
        maxTokens: 'Max',
        inclusive: '(inclusive)',
@@ -80,6 +80,13 @@ export default {
          perRequestPrice: '单次价格'
        }
      },
+      timePricingValidation: {
+        timezone: '请选择有效的 IANA 时区',
+        format: '开始时间和结束时间必须使用 HH:mm:ss 格式',
+        range: '开始时间必须早于结束时间；跨午夜请拆分为两个时间段',
+        overlap: '时间段不能重叠',
+        multiplier: '倍率必须大于 0，且最多保留两位小数'
+      },
      deleteConfirm: '确定要删除渠道「{name}」吗？此操作不可撤销。',
      columns: {
        name: '名称',
@@ -122,6 +129,13 @@ export default {
        imageOutputPrice: '图片输出价格',
        pricePlaceholder: '默认',
        intervals: '上下文区间定价（可选）',
+        timePricing: '时间段定价（可选）',
+        timezone: '时区',
+        addTimePeriod: '添加时间段',
+        startTime: '开始时间',
+        endTime: '结束时间',
+        multiplier: '倍率',
+        removeTimePeriod: '删除时间段',
        minTokens: '最小',
        maxTokens: '最大',
        inclusive: '（含）',
@@ -447,6 +447,7 @@
                  :key="idx"
                  :entry="entry"
                  :platform="section.platform"
+                  enable-time-pricing
                  @update="updatePricingEntry(sIdx, idx, $event)"
                  @remove="removePricingEntry(sIdx, idx)"
                />
@@ -632,7 +633,7 @@ import { extractApiErrorMessage } from '@/utils/apiError'
 import { adminAPI } from '@/api/admin'
 import type { Channel, ChannelModelPricing, CreateChannelRequest, UpdateChannelRequest, AccountStatsPricingRule } from '@/api/admin/channels'
 import type { PricingFormEntry } from '@/components/admin/channel/types'
-import { mTokToPerToken, perTokenToMTok, apiIntervalsToForm, formIntervalsToAPI, findModelConflict, validateIntervals } from '@/components/admin/channel/types'
+import { apiIntervalsToForm, apiTimePricingToForm, createDefaultTimePricingForm, findModelConflict, formIntervalsToAPI, formTimePricingToAPI, mTokToPerToken, perTokenToMTok, validateIntervals, validateTimePricing } from '@/components/admin/channel/types'
 import type { AdminGroup, GroupPlatform } from '@/types'
 import type { Column } from '@/components/common/types'
 import { platformTextClass, platformBadgeLightClass } from '@/utils/platformColors'
@@ -859,7 +860,8 @@ function addPricingEntry(sectionIdx: number) {
    image_input_price: null,
    image_output_price: null,
    per_request_price: null,
-    intervals: []
+    intervals: [],
+    time_pricing: createDefaultTimePricingForm()
  })
 }

@@ -892,7 +894,8 @@ async function syncLatestModels(sectionIdx: number) {
      image_input_price: null,
      image_output_price: null,
      per_request_price: null,
-      intervals: []
+      intervals: [],
+      time_pricing: createDefaultTimePricingForm()
    })
    appStore.showSuccess(t('admin.channels.form.syncModelsSuccess', { count: newModels.length }))
  } catch (error) {
@@ -957,7 +960,8 @@ function addRulePricingEntry(sectionIdx: number, ruleIndex: number) {
    image_input_price: null,
    image_output_price: null,
    per_request_price: null,
-    intervals: []
+    intervals: [],
+    time_pricing: createDefaultTimePricingForm()
  })
 }

@@ -1073,7 +1077,8 @@ function accountStatsRulesToAPI(): AccountStatsPricingRule[] {
            image_input_price: mTokToPerToken(p.image_input_price),
            image_output_price: mTokToPerToken(p.image_output_price),
            per_request_price: p.per_request_price != null && p.per_request_price !== '' ? Number(p.per_request_price) : null,
-            intervals: formIntervalsToAPI(p.intervals || [])
+            intervals: formIntervalsToAPI(p.intervals || []),
+            time_pricing: null
          }))
      })
    }
@@ -1114,7 +1119,8 @@ function formToAPI(): { group_ids: number[], model_pricing: ChannelModelPricing[
        image_input_price: mTokToPerToken(entry.image_input_price),
        image_output_price: mTokToPerToken(entry.image_output_price),
        per_request_price: entry.per_request_price != null && entry.per_request_price !== '' ? Number(entry.per_request_price) : null,
-        intervals: formIntervalsToAPI(entry.intervals || [])
+        intervals: formIntervalsToAPI(entry.intervals || []),
+        time_pricing: formTimePricingToAPI(entry.time_pricing)
      })
    }
  }
@@ -1211,7 +1217,8 @@ function apiToForm(channel: Channel): PlatformSection[] {
        image_input_price: perTokenToMTok(p.image_input_price),
        image_output_price: perTokenToMTok(p.image_output_price),
        per_request_price: p.per_request_price,
-        intervals: apiIntervalsToForm(p.intervals || [])
+        intervals: apiIntervalsToForm(p.intervals || []),
+        time_pricing: apiTimePricingToForm(p.time_pricing)
      } as PricingFormEntry))

    // Read web_search_emulation from features_config
@@ -1400,7 +1407,8 @@ function distributeRulesToPlatforms(apiRules: AccountStatsPricingRule[]) {
        image_input_price: perTokenToMTok(p.image_input_price),
        image_output_price: perTokenToMTok(p.image_output_price),
        per_request_price: p.per_request_price,
-        intervals: apiIntervalsToForm(p.intervals || [])
+        intervals: apiIntervalsToForm(p.intervals || []),
+        time_pricing: createDefaultTimePricingForm()
      } as PricingFormEntry))
    }
    section.account_stats_pricing_rules.push(formRule)
@@ -1523,6 +1531,20 @@ async function handleSubmit() {
    }
  }

+  // 校验时间段定价，并切换到对应平台便于修正
+  for (const section of form.platforms.filter(s => s.enabled)) {
+    for (const entry of section.model_pricing) {
+      const timePricingError = validateTimePricing(entry.time_pricing, t)
+      if (timePricingError) {
+        const platformLabel = t('admin.groups.platforms.' + section.platform, section.platform)
+        const modelLabel = entry.models.join(', ') || t('admin.channels.form.unnamed')
+        appStore.showError(`${platformLabel} - ${modelLabel}: ${timePricingError}`)
+        activeTab.value = section.platform
+        return
+      }
+    }
+  }
+
  const { group_ids, model_pricing, model_mapping, features_config } = formToAPI()

  submitting.value = true
@@ -4441,6 +4441,7 @@ import PricingEntryCard from "@/components/admin/channel/PricingEntryCard.vue";
 import type { PricingFormEntry } from "@/components/admin/channel/types";
 import {
  apiIntervalsToForm,
+  createDefaultTimePricingForm,
  formIntervalsToAPI,
  mTokToPerToken,
  perTokenToMTok,
@@ -4511,6 +4512,7 @@ const emptyGroupPricing = (): PricingFormEntry => ({
  image_output_price: null,
  per_request_price: null,
  intervals: [],
+  time_pricing: createDefaultTimePricingForm(),
 });

 const addGroupPricing = (entries: PricingFormEntry[]) =>
@@ -4530,6 +4532,7 @@ const groupPricingFromAPI = (
    image_output_price: perTokenToMTok(entry.image_output_price),
    per_request_price: entry.per_request_price,
    intervals: apiIntervalsToForm(entry.intervals || []),
+    time_pricing: createDefaultTimePricingForm(),
  }));

 const groupPricingToAPI = (
@@ -4553,6 +4556,7 @@ const groupPricingToAPI = (
        entry.billing_mode === "token"
          ? []
          : formIntervalsToAPI(entry.intervals || []),
+      time_pricing: null,
    }));

 const { t } = useI18n();