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pgvector is an open-source PostgreSQL extension that equips PostgreSQL databases with vector data storage, indexing, and similarity search capabilities—ideal for embeddings-based applications like semantic search and recommendations.
Features
- Native vector data type support for high-dimensional embeddings
- Exact nearest-neighbor similarity search out-of-the-box
- Supports approximate search via HNSW and IVFFlat indexes
- Compatible with multiple distance metrics (L2, cosine, inner product, L1, Hamming, Jaccard)
- Fully integrated with PostgreSQL features—ACID compliance, joins, recovery, and query planner
- No separate vector database is needed; remains within existing PostgreSQL infrastructure
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Categories
Vector Search EnginesLicense
MIT LicenseFollow pgvector
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