diff --git a/backend/internal/service/openai_gateway_grok_test.go b/backend/internal/service/openai_gateway_grok_test.go
index 3d2fd953fa..92f9901142 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-4.6", gjson.GetBytes(upstream.lastBody, "model").String())
+	require.Equal(t, "grok-4.5", 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())