pgvector — Vector Similarity Search for Postgres

pgvector is an open-source vector similarity search extension for PostgreSQL developers and data teams

pgvector is an open-source extension for PostgreSQL that enables vector similarity search directly within the database. It is designed for businesses and engineers who need to store and query machine learning embeddings without moving data to a separate vector database. By adding this extension, companies can perform nearest neighbor searches for various data types including text, images, and audio. By using pgvector, organizations can implement modern search features like semantic search and recommendation engines using their existing infrastructure. The extension supports exact and approximate nearest neighbor search using HNSW and IVFFlat indexing methods. This allows for high-performance retrieval even as datasets scale to millions of vectors. Business owners can find more technical insights on surfai.app to help make informed infra decisions. Typical use cases include building RAG systems for AI chatbots, enhancing e-commerce discovery through visual similarity, and filtering large datasets based on conceptual relevance. It integrates directly into the SQL workflow, meaning your existing team can manage AI data using standard queries. The tool is highly efficient and removes the overhead of maintaining synchronized data across multiple platforms. As an open-source project hosted on GitHub, pgvector is free to use and can be self-hosted on any standard PostgreSQL instance. Many managed service providers like AWS and Supabase also offer it as a pre-installed option.

Specifications

Pricingfree
IntegrationsPostgreSQL, LangChain, LlamaIndex, Supabase, Amazon RDS, Azure Database for PostgreSQL
Best fordata-engineers, software-developers, ctos-and-founders, ai-researchers
Website status checked2026-10-24T06:01:19.792+00:00

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