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pgvector
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Overview
Developed byJonathan Katz
LicensePostgreSQL License
Open source✓ Open Source
Primary languageC
Use casevector similarity search
Technical
Protocols
SQL
Also see
Alternative to
PineconeWeaviate
Competes with
Chroma
Knowledge graph stats
Claims39
Avg confidence95%
Avg freshness99%
Last updatedUpdated yesterday
WikidataQ120549692
Trust distribution
100% unverified
Governance
Not assessed
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pgvector

product

Open-source PostgreSQL extension for vector similarity search

Compare with...

supports data type

ValueTrustConfidenceFreshnessSources
vector○UnverifiedHighFresh1

supports model

ValueTrustConfidenceFreshnessSources
vector embeddings○UnverifiedHighFresh1
embedding vectors○UnverifiedHighFresh1
embedding models○UnverifiedHighFresh1
OpenAI embeddings○UnverifiedHighFresh1

supports protocol

ValueTrustConfidenceFreshnessSources
SQL○UnverifiedHighFresh1

primary use case

ValueTrustConfidenceFreshnessSources
vector similarity search○UnverifiedHighFresh1
vector similarity search in PostgreSQL○UnverifiedHighFresh1
vector similarity search as a native PostgreSQL extension○UnverifiedHighFresh1

requires

ValueTrustConfidenceFreshnessSources
PostgreSQL○UnverifiedHighFresh1
PostgreSQL 11+○UnverifiedHighFresh1

integrates with

ValueTrustConfidenceFreshnessSources
PostgreSQL○UnverifiedHighFresh1
LlamaIndex○UnverifiedHighFresh1
LangChain○UnverifiedHighFresh1
Neon○UnverifiedHighFresh1
Supabase○UnverifiedHighFresh1
Supabase○UnverifiedHighFresh1
OpenAI embeddings○UnverifiedHighFresh1

pricing model

ValueTrustConfidenceFreshnessSources
free○UnverifiedHighFresh1

license type

ValueTrustConfidenceFreshnessSources
PostgreSQL License○UnverifiedHighFresh1
PostgreSQL License○UnverifiedHighFresh1

supports distance metric

ValueTrustConfidenceFreshnessSources
L2 distance○UnverifiedHighFresh1
cosine distance○UnverifiedHighFresh1
inner product○UnverifiedHighFresh1
cosine similarity○UnverifiedHighFresh1

alternative to

ValueTrustConfidenceFreshnessSources
Pinecone○UnverifiedHighFresh1
Weaviate○UnverifiedModerateFresh1
Pinecone○UnverifiedModerateFresh1

programming language

ValueTrustConfidenceFreshnessSources
C○UnverifiedHighFresh1
C○UnverifiedHighFresh1

open source

ValueTrustConfidenceFreshnessSources
true○UnverifiedHighFresh1

supports distance function

ValueTrustConfidenceFreshnessSources
L2 distance○UnverifiedHighFresh1
cosine distance○UnverifiedHighFresh1

developed by

ValueTrustConfidenceFreshnessSources
Jonathan Katz○UnverifiedHighFresh1
Andrew Kane○UnverifiedHighFresh1

written in

ValueTrustConfidenceFreshnessSources
C○UnverifiedHighFresh1

supports index type

ValueTrustConfidenceFreshnessSources
IVFFlat○UnverifiedHighFresh1
HNSW○UnverifiedHighFresh1

competes with

ValueTrustConfidenceFreshnessSources
Chroma○UnverifiedModerateFresh1

Alternatives & Similar Tools

Pinecone
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Chroma
competes with
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Pinecone
alternative to
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Commonly Used With

PostgreSQLLlamaIndexLangChainNeonSupabaseSupabaseOpenAI embeddings

Related entities

Claim count: 39Last updated: 4/9/2026Edit history