pgvector
Open-source vector similarity search extension for PostgreSQL.
About
pgvector is an open-source extension that adds vector similarity search to PostgreSQL, letting you store embeddings alongside existing relational data and query them with exact or approximate nearest-neighbor search using IVFFlat or HNSW indexes. It supports L2, inner product, cosine, and L1 distance and keeps Postgres features like ACID compliance and JOINs. Released under the PostgreSQL license.
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Details
- Category
- Vector Databases & Embeddings
- Price
- Free
- Platform
- Local/Desktop
- Difficulty
- Easy (2/5)
- License
- PostgreSQL
- Added
- Apr 3, 2026
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