pgvector
PostgreSQL extension for exact and approximate vector similarity search.
Official site ↗At a glance
- Organization
- pgvector
- Type
- postgresql extension
- Access
- open source
- Deployment
- self hosted
- Lifecycle
- active
When to consider it
- When vector similarity should run alongside data in PostgreSQL
Considerations
- Approximate indexes trade retrieval recall for speed; measure the effect for the use case.
Connections
- In areaRetrieval, Memory & State
- Supports functionRetrieve semantically related content
- Uses approachDense-vector similarity search
Sources
Last reviewed 2026-09-30