Update app.py

app.py

@@ -16,7 +16,7 @@ def construct_index(directory_path):
     # create a prompt helper
     prompt_helper = PromptHelper(max_input_size, num_outputs, max_chunk_overlap, chunk_size_limit=chunk_size_limit)
     # initialize the predictor with a fine-tuned model
-    llm_predictor = LLMPredictor(llm=ChatOpenAI(temperature=0.9, model_name="gpt-3.5-turbo", max_tokens=num_outputs))
+    llm_predictor = LLMPredictor(llm=ChatOpenAI(temperature=0.9, model_name="gpt-4", max_tokens=num_outputs))
     # load documents from the specified directory
     documents = SimpleDirectoryReader(directory_path).load_data()
     # construct the index
@@ -25,11 +25,6 @@ def construct_index(directory_path):
     index.storage_context.persist(persist_dir="index.json")
     return index
 
-
-def chatbot(input_text):
-    response = query_engine.query(input_text)
-    return response.response
-
 def chatbot(input_text):
     # load the index from disk
     query_engine = index.as_query_engine()