Update app.py

app.py

@@ -31,7 +31,7 @@ vectorstore = FAISS.from_documents(chunked_docs, embedding_model)
 retriever = vectorstore.as_retriever(search_kwargs={"k": 5})
 
 # === Load LLM ===
-llm = ChatOpenAI(model_name="gpt-4o-mini", temperature=0, streaming = True)
+llm = ChatOpenAI(model_name="gpt-4o", temperature=0, streaming = True)
 qa_chain = RetrievalQA.from_chain_type(llm=llm, retriever=retriever)
 
 # === Chainlit start event ===