diff --git a/main.py b/main.py
index 2f22d83..ad794a8 100644
--- a/main.py
+++ b/main.py
@@ -6,7 +6,7 @@ from llama_index.llms import OpenAI
 import os
 import re
 
-llm = OpenAI(model="gpt-3.5-turbo", temperature=0, max_tokens=256)
+llm = OpenAI(model="gpt-4", temperature=0, max_tokens=256)
 service_context = ServiceContext.from_defaults(llm=llm)
 set_global_service_context(service_context)