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LightRAG

Graph retrieval at a fraction of GraphRAG's cost.

currentHKU Data Science ↗Verified 2026-08-13

Cheap

to index

Specifications

KindLibrary
GraphYes, core
LanguagePython
LicenceMIT
GitHub stars~18k

Official links

HKU Data Science official site

What matters

  • Dual-level retrieval over a lighter graph
  • Runs on CPU, which GraphRAG does not comfortably

Best for graph RAG on modest hardware.

Compare with

All 5 side by side →

LightRAG vs LlamaIndex →LightRAG vs LangChain & LangGraph →LightRAG vs Haystack →LightRAG vs RAGFlow →LightRAG vs GraphRAG →

Also in RAG & Knowledge Graphs

LlamaIndexLangChain & LangGraph · LangChainHaystack · deepsetRAGFlow · InfiniFlowGraphRAG · Microsoft