from langchain_openai import OpenAIEmbeddings from langchain_huggingface import HuggingFaceEmbeddings import os def get_embeddings(): if not os.environ.get("OPENAI_API_KEY"): return HuggingFaceEmbeddings(model_name="sentence-transformers/all-MiniLM-L6-v2") return OpenAIEmbeddings()