BigDL-LLM API# BigDL-LLM PyTorch API Optimize Model Load Optimized Model BigDL-LLM transformers-style API Hugging Face transformers AutoModel AutoModelForCausalLM AutoModel AutoModelForSpeechSeq2Seq AutoModelForSeq2SeqLM Native Model BigDL-LLM LangChain API LLM Wrapper of LangChain Hugging Face transformers Format Native Model Embeddings Wrapper of LangChain Hugging Face transformers AutoModel Native Model