Pyyan / Compare / LangChain & LangGraph vs LightRAG
RAG & Knowledge Graphs · verified 13 Aug 2026
| Specification | LangChain & LangGraph | LightRAG |
|---|---|---|
| Summary | Orchestration, with retrieval as one piece. | Graph retrieval at a fraction of GraphRAG's cost. |
| Kind | Framework | Library |
| Graph | Via integrations | Yes, core |
| Language | Python, TypeScript | Python |
| Licence | MIT | MIT |
| GitHub stars | ~120k | ~18k |
| Category | RAG & Knowledge Graphs | RAG & Knowledge Graphs |
| Official | LangChain ↗ | HKU Data Science ↗ |
Highlighted rows are where these differ.
Best for agents that retrieve as one step among many.
Best for graph RAG on modest hardware.