Update app.py

app.py

@@ -49,7 +49,7 @@ def groq_with_memory(message: str, topic: str = "general", summarize: bool = Fal
             messages.append({"role": "user", "content": summary_prompt})
         
         payload = {
-            "model": "llama-3.1-8b-instant",
+            "model": "gemma2-9b-it",
             "messages": messages,
             "max_tokens":2000,
             "temperature":0.9