LightRAG

LightRAG is a minimal RAG toolkit that strips away heavy abstractions. Here’s a complete build with code, performance numbers versus a LangChain baseline, and when LightRAG is the right choice.

Want LightRAG’s lean retrieval with LangChain’s chain ecosystem? Here’s how to wrap LightRAG as a LangChain-compatible retriever.

Vector search misses keyword-heavy queries. BM25 misses semantic similarity. Combine both with hybrid search for better retrieval recall.