Update app.py

app.py

@@ -24,7 +24,7 @@ def chat():
     
     # Create the chat completion request with the current message
     response = client.chat.completions.create(
-        model="mistralai/Mistral-Nemo-Instruct-2407", 
+        model="Qwen/Qwen2.5-72B-Instruct", 
         messages=messages, 
         max_tokens=1024,
         stream=False  # Set stream to False to get the full response at once