Update app.py

app.py

@@ -610,7 +610,7 @@ The form of Desired Outcome must be 'key1, key2, ...'. For example to get the na
     ),
 ]
 
-        llm_chain = LLMChain(llm=ChatOpenAI(model='gpt-4', temperature=0.5, streaming=True), prompt=prompt, verbose=False,)
+        llm_chain = LLMChain(llm=ChatOpenAI(model='gpt-3.5-turbo', temperature=0.5, streaming=True), prompt=prompt, verbose=False,)
 
         tool_names = [tool.name for tool in tools]
         agent = LLMSingleActionAgent(