Update app.py

app.py

@@ -141,7 +141,7 @@ def classify(req: ExplainRequest):
             {"role": "user", "content": user_message}
         ],
         "temperature": 0.0,
-        "max_tokens": 256
+        "max_tokens": 2000  # Increased for models with extended reasoning/thinking
     }
 
     try:
@@ -160,6 +160,11 @@ def classify(req: ExplainRequest):
         reply = result.get("choices", [{}])[0].get("message", {}).get("content", "").strip()
         
         if not reply:
+            logger.warning(f"Empty content in response. Finish reason: {result.get('choices', [{}])[0].get('finish_reason')}")
+            # If content is empty, try to extract from reasoning or log for debugging
+            reasoning = result.get("choices", [{}])[0].get("message", {}).get("reasoning", "")
+            if reasoning:
+                logger.warning(f"Model has reasoning but no content. This may indicate truncation.")
             logger.error(f"OpenRouter returned empty response in /classify. Full result: {result}")
             raise HTTPException(status_code=500, detail="No response from OpenRouter")