Open Source pg_vectorsearch Brings More Scalable Vector Search to PostgreSQL



Posted on Sat Nov 7 2026 | 3:19 pm


Tiger Data has released pg_vectorsearch, an open source PostgreSQL extension for vector similarity search, currently in alpha. Its PRISM index uses data partitioning and compression instead of the graph-based approach used by pgvector’s HNSW index, reducing memory requirements and index build times.




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