pgvector

Open-source PostgreSQL extension for vector similarity search. Two components: (1) the server-side Postgres extension (C, compiled and installed into Postgres), and (2) the Python client package 'pgvector' on PyPI which provides ORM/adapter integrations for psycopg2, psycopg3, asyncpg, SQLAlchemy, Django, SQLModel, and Peewee. The extension name in SQL is 'vector' (CREATE EXTENSION vector), not 'pgvector'. Maintained by Andrew Kane. Current extension version: 0.8.2 (CVE security fix). Python client: 0.4.2.