VectorChord
PostgreSQL extension for high-performance vector search by TensorChord. Uses RaBitQ quantization for compressed ANN indexes. Also ships vchord_bm25, a companion BM25 extension (dual-licensed AGPLv3/ELv2), used as a benchmark baseline against ParadeDB and psql_bm25s.
Related
- pgvector — the standard alternative it benchmarks against
- Search using PostgreSQL — architectural context
- Dense Vector Retrieval · Binary Quantization · BM25