gradio==4.36.1 openai==1.33.0 langchain==0.2.3 python-dotenv==1.0.1 faiss-cpu==1.8.0 pdfplumber==0.11.0 unstructured==0.7.12 promptlayer==1.0.3 tiktoken==0.7.0 langchain-openai==0.1.8 langchain-community==0.2.4 pypdf==4.2.0 langfuse==2.39.1