Postgres users who need faster, cheaper vector search than pgvector at larger scale.

VectorChord is a Postgres extension, the successor to pgvecto.rs, providing scalable, disk-friendly vector similarity search with RaBitQ compression and pgvector-compatible syntax.

Self-hosted, installed as a Postgres extension via TensorChord's Docker images or PGXN.

Actively maintained by TensorChord as of 2026, succeeding the now-superseded pgvecto.rs project.

It exists to give Postgres users higher insert throughput and query speed than pgvector's HNSW without leaving the database.

Requires PostgreSQL and is compatible with existing pgvector data types and queries.

Open source, dual-licensed AGPLv3 or Elastic License v2; self-hosted; data stays inside the operator's own Postgres instance.