pgvector

Open-source PostgreSQL extension for storing and querying vector embeddings

AI InfrastructureFree

pgvector is an open-source extension for PostgreSQL that adds native vector storage and similarity search capabilities, enabling teams to store AI embeddings alongside relational data in the same database without a separate vector store. It supports exact and approximate nearest-neighbor search using IVFFlat and HNSW indexing algorithms, and integrates seamlessly with standard PostgreSQL tools, ORMs, and cloud-managed Postgres services. Development teams that already run PostgreSQL choose pgvector for its zero additional infrastructure, ACID transactions around vector operations, and simplified architecture.

Key Features

• ✓PostgreSQL extension
• ✓HNSW indexing
• ✓Exact and ANN search
• ✓ORM compatible
• ✓ACID transactions