Update app.py

app.py

@@ -20,7 +20,7 @@ def get_groq_response(message, category):
     
     try:
         response = openai.ChatCompletion.create(
-            model="gpt-4",
+            model="llama-3.1-70b-versatile",
             messages=[
                 {"role": "system", "content": system_message},
                 {"role": "user", "content": message}