Update app.py

app.py

@@ -474,6 +474,7 @@ def handsome_chat_completions():
                     first_reasoning_chunk = True
                     response_id = f"chatcmpl-{uuid.uuid4()}" 
                     created_time = int(time.time())
+
                     for chunk in response.iter_lines():
                         if chunk:
                             if first_chunk_time is None:
@@ -500,6 +501,12 @@ def handsome_chat_completions():
 
                                     if delta.get("reasoning_content") is not None:
                                         if first_reasoning_chunk:
+                                            first_chunk = openai_chunk.copy()
+
+                                            first_chunk["choices"][0]["delta"]["content"] = ""
+                                            first_chunk["choices"][0]["delta"]["reasoning_content"] = ""
+                                            yield f"data: {json.dumps(first_chunk)}\n\n"
+
                                             openai_chunk["choices"][0]["delta"]["content"] = "<think>\n"
                                             openai_chunk["choices"][0]["delta"]["reasoning_content"] = None
                                             yield f"data: {json.dumps(openai_chunk)}\n\n"