update app.py

app.py

@@ -19,10 +19,10 @@ def format_docs(docs):
 
 embeddings = OpenAIEmbeddings()
 db = FAISS.load_local("faiss_index", embeddings, allow_dangerous_deserialization=True)
-retriever = db.as_retriever(k=3)
+retriever = db.as_retriever(k=5)
 
 
-llm = ChatOpenAI(model="gpt-3.5-turbo-0125")
+llm = ChatOpenAI(model="gpt-4o")
 
 prompt = ChatPromptTemplate.from_messages([
     ('system',