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OSS2026-07-30 · source-backed
HKUDS/LightRAG (EMNLP 2025), microsoft/graphrag, and milvus-io/milvus remain the three anchors of graph and vector retrieval, all clustered within 10K stars of each other. None has broken away, which is itself the signal: graph RAG hasn't picked a winner after eighteen months. If you're choosing a knowledge-graph retrieval backend today you're still picking among three viable, actively maintained options rather than accepting a default. That's more work for you and probably healthier for the ecosystem.
Each link below shares sources, entities, or timing with this story.
HKUDS built by LightRAG / Shared entities / Same source domain / Earlier coverage
Linked by a graph relationship (HKUDS built by LightRAG); both cover HKUDS, LightRAG; reported by the same outlet (github.com).
HKUDS built by LightRAG / Shared entities / Same source domain / Earlier coverage / Tension
Linked by a graph relationship (HKUDS built by LightRAG); both cover HKUDS, LightRAG; reported by the same outlet (github.com).
HKUDS built by LightRAG / Shared entity: HKUDS / Same source domain / Earlier coverage
Linked by a graph relationship (HKUDS built by LightRAG); both cover HKUDS; reported by the same outlet (github.com).
Linked by a graph relationship (HKUDS built by LightRAG); both cover HKUDS; reported by the same outlet (github.com).
Milvus partners with OpenAI / Shared entity: Milvus / Same source domain / Earlier coverage
Linked by a graph relationship (Milvus partners with OpenAI); both cover Milvus; reported by the same outlet (github.com).
HKUDS built by LightRAG / Shared entities / Same source domain / Earlier coverage
Linked by a graph relationship (HKUDS built by LightRAG); both cover HKUDS, None; reported by the same outlet (github.com).
HKUDS built by LightRAG / Shared entity: HKUDS / Same source domain / Earlier coverage
Linked by a graph relationship (HKUDS built by LightRAG); both cover HKUDS; reported by the same outlet (github.com).
Linked by a graph relationship (HKUDS built by LightRAG); both cover HKUDS; reported by the same outlet (github.com).