diff --git a/src/engine/providers/utils/open-ai-api.ts b/src/engine/providers/utils/open-ai-api.ts
index b44d08d..55c8056 100644
--- a/src/engine/providers/utils/open-ai-api.ts
+++ b/src/engine/providers/utils/open-ai-api.ts
@@ -76,7 +76,7 @@ export async function getChatCompletionStream(
     },
     responseTime,
     responseModel: lastChunk?.model || 'unknown',
-    data: chunks,
+    data: lastChunk,
   };
 }