A PostgreSQL extension for high-performance approximate nearest neighbor (ANN) search. Status: alpha. Meant for testing, not production. Upgrading between prereleases may not be possible; plan to drop and recreate the extension and its indexes. See the changelog for known issues. PRISM index (100M+ vectors) — IVF-style, with hierarchical routing RaBitQ quantization with theoretical error bounds for two-stage search SIMD-optimized distance computation (AVX2, AVX512, NEON) Dynamic updates — insert...