Update app.py

app.py

@@ -20,6 +20,7 @@ from google.oauth2 import service_account
 import tempfile
 import os
 from langchain.llms import OpenAI  # Import the OpenAI class
+from langchain.chat_models import ChatOpenAI  # Import ChatOpenAI
 
 
 
@@ -183,24 +184,27 @@ def get_embeddings_model():
 
 # QA System Initialization (qa_system.py)
 
+
 @st.cache_resource
 def initialize_qa_system(_vector_store):
     try:
-        llm = OpenAI(
-            model_name="gpt-4",  # Or another OpenAI model like "text-davinci-003"
+        # Use ChatOpenAI instead of OpenAI
+        llm = ChatOpenAI(
+            temperature=0,
+            model_name="gpt-4",  # Or another OpenAI model like "gpt-3.5-turbo"
             api_key=os.environ.get('OPENAI_API_KEY'),
-            prompt_template="Extract the specific details relevant to the query accurately from the document without adding additional information that is not present in the text. Provide concise, clear responses that stay within the boundaries of the document's content."
         )
 
         qa_pipeline = RetrievalQA.from_chain_type(
             llm=llm,
-            retriever=_vector_store.as_retriever()
+            retriever=_vector_store.as_retriever(),
+            chain_type="stuff"  # Use "stuff" chain type for chat models
         )
         return qa_pipeline
     except Exception as e:
         st.error(f"Error initializing QA system: {e}")
         return None
-
+        
 # Streamlit App Interface (app.py)
 def main():
     st.title("**SYNAPTYX - RFP Analysis Agent**")