PricingFree (open-source PostgreSQL extension)Available on managed Postgres: Supabase, Neon, RDS, Cloud SQL, Crunchy Bridge
Free (1 starter index, 2GB storage)$50/mo Standard (usage-based)Custom Enterprise
SDK Languagespythonjavascripttypescriptgojavarubyrustcsharpphp
pythonjavascripttypescriptgojava
Frameworkslangchainllamaindexvercel-aihaystack
langchainllamaindexvercel-aiopenai-agentshaystack
Best ForTeams already running Postgres who want vector search without adding a new database — ACID, joins, and one operational story
Production RAG and agent memory at scale — serverless billing, generous free tier, and a managed experience with zero ops
LimitationsSlower at scale than purpose-built engines; no native multi-tenancy primitives beyond schemas; hybrid search and serverless depend on the host platform (Supabase, Neon, etc.), not pgvector itself
Cloud-only with no self-hosted option; vendor lock-in on proprietary index format; advanced features like dedicated read nodes add cost quickly at scale