Update app.py

app.py

@@ -98,10 +98,10 @@ def get_pdf_index():
 
 index = get_pdf_index()
 
-
-llm = HuggingFaceHub(
-    repo_id="HooshvareLab/bert-fa-zwnj-base",  
-    model_kwargs={"temperature": 0.7, "max_new_tokens": 512}
+llm = ChatOpenAI(
+    base_url="https://api.together.xyz/v1",
+    api_key='0291f33aee03412a47fa5d8e562e515182dcc5d9aac5a7fb5eefdd1759005979',
+    model="meta-llama/Llama-3.3-70B-Instruct-Turbo-Free"
 )
 
 chain = RetrievalQA.from_chain_type(