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Hybrid Search and Re-Ranking: The Cheapest Quality Win

This story is from 2026-09-28. It is preserved in the archive; the latest stories are on the live feed.

Hybrid search runs two retrieval methods in parallel, BM25 for exact keyword matching and vector search for semantic similarity, then fuses their results using reciprocal rank fusion. Adding a cross-encoder re-ranker on top rescues the final ordering. Together, these two techniques consistently del…

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  1. 2026-09-28 13:45 · DEV Community — AI
    Hybrid Search and Re-Ranking: The Cheapest Quality Win

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