Weaviate released version 1.39, promoting query-time Boost API and MMR diversity ranking to GA, introducing 4-bit residual quantization (RQ), and shipping an experimental clientless Search REST interface.

Key Takeaways

  • ✓Boost API reorders search rankings without dropping hit candidates for flexible RAG business rules;
  • ✓MMR diversity ranking reaches GA, preventing near-duplicate results in hybrid keyword and vector queries;
  • ✓4-bit RQ combined with automated HNSW snapshots drastically reduces memory footprint and disk commit overhead.
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