Update app.py

app.py

@@ -155,7 +155,7 @@ async def predict(message, history):
     headers = { "Content-Type": "application/json",
                 "Authorization": f"Bearer {openrouter_key}" }
     body = { "stream": True,
-             "model": "openchat/openchat-8b",
+             "model": "deepseek/deepseek-chat",
              "max_tokens": 1024,
              "messages": [
                  {"role": "user", "content": prompt}