Update app.py

app.py

@@ -30,7 +30,7 @@ def summarize_pdf(file, openai_api_key):
     vector_store = FAISS.from_documents(documents, embeddings)
 
     # Create a RetrievalQA chain for summarization
-    llm = ChatOpenAI(model="gpt-4", openai_api_key=openai_api_key)  # Passing API key here
+    llm = ChatOpenAI(model="gpt-4o", openai_api_key=openai_api_key)  # Passing API key here
     qa_chain = RetrievalQA.from_chain_type(
         llm=llm,
         chain_type="stuff",
@@ -56,7 +56,7 @@ def query_pdf(file, user_query, openai_api_key):
     vector_store = FAISS.from_documents(documents, embeddings)
 
     # Create a RetrievalQA chain for querying the document
-    llm = ChatOpenAI(model="gpt-4", openai_api_key=openai_api_key)  # Passing API key here
+    llm = ChatOpenAI(model="gpt-4o", openai_api_key=openai_api_key)  # Passing API key here
     qa_chain = RetrievalQA.from_chain_type(
         llm=llm,
         chain_type="stuff",