vector databases Open Source ()
pgvector
Open-source PostgreSQL extension adding native vector similarity search, HNSW indexing, and relational vector storage.
GitHub Stars 23,475 C
Starting Price Free / Custom free
MCP Compatibility ✅ Native Support Self-Hosting Available
Pricing & Quota Breakdown
100% Free and open-source under the PostgreSQL License. Pre-installed and available with zero license fees on Supabase, AWS RDS, Neon, Azure, and self-hosted Postgres.
Developer Free
$0 / month
Billed flat - ✓ Community support
- ✓ Standard rate limits
- ✓ Core API access
Head-to-Head pgvector Comparisons
Side-by-side technical benchmarks with competitors
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