Weaviate 1.39 ships Boost API and MMR to GA, adds 4-bit RQ quantization
CShorten30 · x · 2026-08-27
Weaviate 1.39 graduates two search features to GA:
- Boost API: nudge results up or down at query time without dropping anything, only reordering;
- MMR diversity selection: stops page one from repeating the same answer, works on hybrid and vector search.
Also new: 4-bit RQ compression (between 8-bit and 1-bit, preview), an experimental search REST API (plain JSON over HTTP, no gRPC/GraphQL client needed — handy for shell scripts and edge functions), automatic HNSW snapshots that clean up commit logs for less disk and faster startup, and gRPC-Web on by default since 1.38.3.
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