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Pgvector

Pgvector Laravel Package

ankane/pgvector

Ruby gem for pgvector, the Postgres extension for vector similarity search. Adds vector columns, cosine/L2/inner product distance queries, and HNSW/IVFFlat index support to ActiveRecord, making it easy to build semantic search and AI-powered features on Postgres.

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ankane/pgvector brings vector similarity search to Ruby and Rails by integrating the pgvector extension for PostgreSQL. Store embeddings right in your database and run nearest neighbor queries through ActiveRecord—no separate vector service required.

  • Multiple distance metrics: cosine, L2, and inner product
  • HNSW and IVFFlat indexes for fast approximate search
  • ActiveRecord integration with nearest_neighbors, scopes, and migrations
  • Half precision and binary vectors for compact storage
  • Composes with existing Postgres features like joins, filters, and transactions
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