Update app.py

app.py

@@ -32,14 +32,14 @@ def get_text_chunks(text):
 
 def get_vectorstore(text_chunks):
     # embeddings = OpenAIEmbeddings()
-    embeddings = HuggingFaceInstructEmbeddings(model_name="meta-llama/Llama-2-7b")
+    embeddings = HuggingFaceInstructEmbeddings(model_name="NousResearch/Llama-2-7b-hf")
     vectorstore = FAISS.from_texts(texts=text_chunks, embedding=embeddings)
     return vectorstore
 
 
 def get_conversation_chain(vectorstore):
     # llm = ChatOpenAI()
-    llm = HuggingFaceHub(repo_id="meta-llama/Llama-2-7b", model_kwargs={"temperature":0.5, "max_length":512})
+    llm = HuggingFaceHub(repo_id="google/flan-t5-xxl", model_kwargs={"temperature":0.5, "max_length":512})
 
     memory = ConversationBufferMemory(
         memory_key='chat_history', return_messages=True)