Update app.py

app.py

@@ -39,6 +39,13 @@ if "messages" not in st.session_state:
 loader = TextLoader("shermaissian_how_to.txt")
 documents = loader.load()
 
+llm = ChatOpenAI(
+  openai_api_key=os.environ.get("OPENAI_API_KEY"),
+  model='gpt-3.5-turbo-16k',
+  temperature=0,
+  streaming=True
+)
+
 # split it into chunks
 text_splitter = CharacterTextSplitter(chunk_size=1000, chunk_overlap=0)
 docs = text_splitter.split_documents(documents)