updating to 4o

app.py

@@ -72,7 +72,7 @@ def nishauri(question: str, conversation_history: list[str]):
     )
 
     completion = client.chat.completions.create(
-      model="gpt-3.5-turbo",
+      model="gpt-4o",
         messages=[
         {"role": "user", "content": question_final}
       ]