langchain==0.2.0 fastapi==0.95.0 uvicorn==0.22.0 gptcache==0.1.10 transformers==4.30.0 accelerate==0.18.0 bitsandbytes==0.41.0 sentence-transformers==2.2.0 scikit-learn==1.2.1 langchain_community==0.0.1 openai==0.27.0 vllm[all]==0.1.7 torch==2.1.0 nltk==3.8.1 psutil==5.9.4