Framework
pgvector
pgvector is an open-source AI framework, launched in 2021, made for developers and businesses.
A Postgres extension that stores vectors and finds nearest neighbours.
Main jobs: Vector search. It is open source and free to use. You can use it on your own server, offline on your own machine and through an API.
Markdown version of https://godooo.ai/en/framework/pgvector. Every page on this site has one: add .md to its address.
At a glance
- Type
- Framework
- Launched
- 2021
- Galaxy
- Models & APIs
- Open source
- Yes
- Source code
- github.com/pgvector/pgvector
- GitHub stars
- 23,142
- How you run it
- Self-host · Runs offline · API
- Made for
- Developers · Businesses
- Website
- github.com
What it can do
Vector searchmain jobunconfirmed
“pgvector Open-source vector similarity search for Postgres Store your vectors with the rest of your data.”— github.com, 2026-09-24
unconfirmedproposed by a machine, awaiting calibration
Alternatives
- ChromaOpen source, freeAlso does: Vector search
- FaissOpen source, freeAlso does: Vector search
- LanceDBOpen source, freeAlso does: Vector search
- MilvusOpen source, freeAlso does: Vector search
- QdrantOpen source, freeAlso does: Vector search
- WeaviateOpen source, freeAlso does: Vector search
- Chroma MCP ServerOpen source, freeAlso does: Vector search
- Qdrant MCP ServerOpen source, freeAlso does: Vector search
- LlamaIndexOpen source, freeAlso does: Vector search
- RAGFlowOpen source, freeAlso does: Vector search
- BGEOpen source, freeAlso does: Vector search
- GraphitiOpen source, freeAlso does: Vector search
Connections
- Applies
- Vector Database
Questions
What is pgvector?
pgvector is an open-source AI framework, launched in 2021, made for developers and businesses. A Postgres extension that stores vectors and finds nearest neighbours.
Is pgvector free?
Yes. pgvector is open source and free to use.
Is pgvector open source?
Yes. The source code is at https://github.com/pgvector/pgvector.
Can pgvector run locally?
Yes. pgvector can run offline on your own machine. It can also be self-hosted on your own server.
What can pgvector do?
Main jobs: Vector search.
What are open-source alternatives to pgvector?
Open-source ones: Chroma, Faiss, LanceDB, Milvus, Qdrant, Weaviate, Chroma MCP Server and Qdrant MCP Server.
Sources
- github.com/pgvector/pgvectorchecked 2026-09-24