diff --git a/backend/internal/service/openai_gateway_grok_test.go b/backend/internal/service/openai_gateway_grok_test.go
index 27419e82c3..3d2fd953fa 100644
--- a/backend/internal/service/openai_gateway_grok_test.go
+++ b/backend/internal/service/openai_gateway_grok_test.go
@@ -1848,7 +1848,7 @@ func TestForwardGrokResponsesStreamingDefaultsEmptyModelTo45AndSnapshots(t *test
 	require.Equal(t, xai.DefaultCLIBaseURL+"/responses", upstream.lastReq.URL.String())
 	require.Equal(t, "Bearer access-token", upstream.lastReq.Header.Get("Authorization"))
 	require.Equal(t, "responses=experimental", upstream.lastReq.Header.Get("OpenAI-Beta"))
-	require.Equal(t, "grok-4.5", gjson.GetBytes(upstream.lastBody, "model").String())
+	require.Equal(t, "grok-4.6", gjson.GetBytes(upstream.lastBody, "model").String())
 	require.NotEmpty(t, gjson.GetBytes(upstream.lastBody, "prompt_cache_key").String())
 	require.Equal(t, gjson.GetBytes(upstream.lastBody, "prompt_cache_key").String(), upstream.lastReq.Header.Get(grokConversationIDHeader))
 	require.Equal(t, "web_search", gjson.GetBytes(upstream.lastBody, "tools.0.type").String())
@@ -2543,7 +2543,7 @@ func TestForwardAsChatCompletionsForGrokStreamingStopFallsBackToRawXAIChatComple
 	require.Equal(t, grokCLIVersion, upstream.lastReq.Header.Get("X-Grok-Client-Version"))
 	require.NotEmpty(t, upstream.lastReq.Header.Get(grokConversationIDHeader))
 	require.NotEqual(t, "native-client-conversation", upstream.lastReq.Header.Get(grokConversationIDHeader))
-	require.Equal(t, "grok-4.5", gjson.GetBytes(upstream.lastBody, "model").String())
+	require.Equal(t, "grok-4.6", gjson.GetBytes(upstream.lastBody, "model").String())
 	require.True(t, gjson.GetBytes(upstream.lastBody, "stream_options.include_usage").Bool())
 	require.True(t, result.Stream)
 	require.Equal(t, 6, result.Usage.InputTokens)
@@ -2658,7 +2658,7 @@ func TestForwardAsAnthropicForGrokUsesXAIResponses(t *testing.T) {
 	require.True(t, gjson.GetBytes(upstream.lastBody, "stream").Bool())
 	require.NotContains(t, string(upstream.lastBody), "chatgpt.com")
 	require.Equal(t, "grok", result.Model)
-	require.Equal(t, "grok-4.5", result.UpstreamModel)
+	require.Equal(t, "grok-4.6", result.UpstreamModel)
 	require.Equal(t, 5, result.Usage.InputTokens)
 	require.Equal(t, 2, result.Usage.OutputTokens)
 	require.Equal(t, 3, result.Usage.CacheReadInputTokens)