LightRAG
Free open-source graph-based RAG — faster, cheaper, smarter answers than vector RAG.
LightRAG is a free, open-source, blazing-fast graph-based RAG framework that builds dual-level knowledge graphs (entities + relationships) for sharper, more contextual retrieval than naive vector RAG. Lower cost, faster ingestion, better answers on complex queries — a true GraphRAG-class engine you can run on your laptop. Plug in any LLM (OpenAI, Anthropic, Gemini, Ollama, vLLM) and your own embeddings. MIT licensed, completely free.
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LightRAG · lightrag · light rag · HKUDS LightRAG · open source GraphRAG · graph RAG free · fast RAG framework · AI Tools & Development · AI Assistants & Search · free AI tool · knowledge graph AI · AI Agents