Update util.py

util.py

@@ -33,7 +33,7 @@ def get_final_answer(question, initial_answer):
     client = OpenAI()
     completion = client.chat.completions.create(
         messages=[{"role": "user", "content": [{"type": "text", "text": prompt_template}]}],
-        model="gpt-4o"
+        model="gpt-4.5-preview"
     )
 
     final_answer = completion.choices[0].message.content