Retrieval-Augmented Generation combines LLMs with external knowledge retrieval. It fetches relevant documents from a knowledge base and provides them as context to the LLM, reducing hallucinations.

Do I need to know Python for LangChain?

Yes, LangChain is primarily a Python framework (with a JavaScript version available). You should be comfortable with Python and have basic understanding of LLM APIs.

What vector databases work with LangChain?

LangChain supports Pinecone, Weaviate, Chroma, FAISS, Milvus, and many others. Chroma and FAISS are popular choices for getting started due to their simplicity.

Is LangChain still relevant with new AI frameworks?

Yes, LangChain continues to evolve and remains one of the most popular frameworks. Alternatives like LlamaIndex and Haystack exist, but LangChain's ecosystem and community are extensive.

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