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Vector DB for AI Agents 'Caliby' Released

·2026.05.09 14:29

Key point

Caliby, a high-performance embedded vector database optimized for AI agents and RAG, has been released as open source.

Details

Caliby, developed through collaboration by an MIT database research team, is an embedded vector search library designed for AI agent and RAG (Retrieval-Augmented Generation) workflows.

Key features include:

  • Overwhelming performance: 4x faster than pgvector, and outperforms FAISS in disk storage scenarios.
  • Support for various indexes: Supports HNSW, DiskANN, IVF+PQ indexes, efficiently handling searches across millions to tens of millions of vectors.
  • Hybrid storage: Adopts a native hybrid storage approach that supports both text and vectors simultaneously, enhancing agent utility.
  • Ease of use: Built on a C++ core with Python bindings, ready to use immediately with just pip install caliby.

Caliby supports CPU and SIMD (AVX-512/AVX2/SSE) acceleration, and aims to be a lightweight engine that runs in-process without any separate external components.

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