Update llama model

app.py

@@ -55,7 +55,7 @@ def generate_answer(background, question):
                 "content": prompt.format(background, question),
             }
         ],
-        model="llama-3.1-8b-instant",
+        model="llama-3.1-70b-versatile",
     )
     tasks = chat_completion.choices[0].message.content.strip()