Update utils.py

utils.py

@@ -22,7 +22,7 @@ def format_document_metadata(docs):
 
 def openai_llm(api_key: str):
     """Get a configured OpenAI language model."""
-    return ChatOpenAI(model_name="gpt-3.5-turbo", temperature=0, openai_api_key=api_key)
+    return ChatOpenAI(model_name="gpt-4o", temperature=0, openai_api_key=api_key)
 
 def delete_collection(collection_name, qdrant_url, qdrant_api_key):
     """Delete a Qdrant collection."""