Compare Tools
Pick a category, then select 2–3 tools to compare side by side.
Category
Select 2–3 tools to compare
pgvectorself-hostedFree (open-source PostgreSQL extension)
WeaviatehybridFree (self-hosted, open-source)
Hybrid Search
Metadata Filtering
Multi Tenancy
Managed Embeddings
Mcp Server
Serverless
Pricing
Free (open-source PostgreSQL extension)Available on managed Postgres: Supabase, Neon, RDS, Cloud SQL, Crunchy Bridge
Free (self-hosted, open-source)Free Hosted$45/mo Flex$280/mo Plus$400/mo Premium
Open Source
Self-Hosted
SDK Languages
pythonjavascripttypescriptgojavarubyrustcsharpphp
pythonjavascripttypescriptgojava
Frameworks
langchainllamaindexvercel-aihaystack
langchainllamaindexvercel-aihaystackdspy
Compliance
soc2hipaagdprpci-dss
soc2gdprhipaa
Best For
Teams already running Postgres who want vector search without adding a new database — ACID, joins, and one operational story
Hybrid RAG with built-in vectorizer modules, generative search, and strong multi-tenancy — runs anywhere from laptop to managed cloud
Limitations
Slower 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
Resource-hungry compared to Qdrant or Chroma; module configuration has a learning curve; some advanced replication features are cloud-only
Supported Not supported Unverified