Founder of a listed tool
Renchu Song
Epsilla co-founder and former CEO; now HarnessRouter co-founder/CTO, named behind the Epsilla Vector Database listing on Anchor Terminal.
What Renchu builds
Epsilla Vector Database F · Retrieval & vector search
Open-source (GPL-3.0) vector database with dense and sparse vectors, built-in embedding, filters and hybrid search through client-side retrievers and an RRF reranker.
Epsilla co-founder and former CEO; now HarnessRouter co-founder/CTO, researched 27 October 2026 · the people behind it
Backed by
Questions
Who is Renchu Song?
Renchu (Richard) Song co-founded Epsilla, an AI agent platform, and is now co-founder and CTO of HarnessRouter, a unified interface for agent harnesses. Song was previously senior director of cloud engineering at TigerGraph and led the team that built its managed database service.
What does Epsilla (founder now at HarnessRouter; merger reported on own profile) make?
Anchor Terminal lists Epsilla Vector Database from Epsilla (founder now at HarnessRouter; merger reported on own profile). Open-source (GPL-3.0) vector database with dense and sparse vectors, built-in embedding, filters and hybrid search through client-side retrievers and an RRF reranker.
Who has invested in Epsilla (founder now at HarnessRouter; merger reported on own profile)?
The sources our research read name Y Combinator.
How are Renchu's tools graded?
Epsilla Vector Database is graded F, 35.9 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.
Sources (9)
- https://www.ycombinator.com/launches/J8t-epsilla-a-10x-faster-open-source-vector-database
- https://www.ycombinator.com/founders/14642-richard-song
- https://www.linkedin.com/in/renchu-richard-song-a4099247
- https://www.epsilla.com/
- https://www.epsilla.com
- https://github.com/epsilla-cloud
- https://x.com/epsilla_inc
- https://github.com/epsilla-cloud/vectordb
- https://www.epsilla.com/sla
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