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pgvector

9Verified

pgvector is an open-source PostgreSQL extension that adds vector data types and similarity search, letting developers run embeddings and RAG directly inside their existing Postgres database.

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Overview

pgvector is an open-source PostgreSQL extension that adds vector data types and similarity search, letting developers run embeddings and RAG directly inside their existing Postgres database.

pgvector is a free vector database built for developers, enterprises. It supports search, embeddings, rag. It is hybrid and open source. It holds a rating of 9/10 on FindurAI.

Best For

Vector search inside PostgreSQL

DevelopersEnterprises
Pricing
Free
Free plan
Available
Developer API
Not available
Mobile app
Not available

Key Features

pgvector's core feature set includes vector column type, similarity and distance operators, hnsw and ivfflat indexes, and works with standard sql.

More About pgvector

pgvector is most commonly used for knowledge base, ai agents, and document analysis.

On the capability side, it supports search, embeddings, and rag. It's built on embeddings, search, and rag AI technology.

pgvector is available on Linux, Windows, and Mac, and can be deployed via local, self hosted, and cloud. Hosting is hybrid and the project is open source.

pgvector does not currently offer a public developer API. It integrates with PostgreSQL, Python, and SQL.

Pros

  • Adds vectors to existing Postgres
  • Fully open source and free
  • No extra database to operate
  • Supported by major Postgres hosts

Cons

  • Needs Postgres/SQL knowledge
  • Tuning required at large scale
  • Fewer AI-specific features than dedicated DBs

Frequently Asked Questions

What is pgvector?

An open-source extension that adds vector storage and similarity search to PostgreSQL.

Is pgvector free?

Yes, it is fully open source and free, and supported by many managed Postgres providers.

Quick Facts

Category
Databases
Tool type
Vector Database
Skill level
Advanced
License
Open Source
Hosting
Hybrid
Open source
Yes
Verified
Yes

Tags

vector databasepostgresopen sourceembeddingsrag

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