pgvector
PostgreSQL extension for vector similarity search
Verdict
If you already run Postgres, pgvector eliminates an entire service. IVFFlat and HNSW indexes handle millions of vectors. Use with Supabase or neon for serverless deployment.
Other Vector Databases
- ChromaStable
Embedded, developer-first vector database
- Elasticsearch Vector SearchProduction
Vector similarity search built into the Elasticsearch engine
- LanceDBExperimental
Embedded serverless vector database backed by Lance columnar format
- MilvusStable
Cloud-native distributed vector database for billion-scale
- MongoDB Atlas Vector SearchStable
Native vector search within MongoDB Atlas — no separate database needed
- PineconeProduction
Fully managed serverless vector database