Hybrid Search

Learn what actually changes in your retrieval stack when you move from keyword search to embeddings and vector indexes, and why hybrid search is usually the right answer.

You'll learn why the RRF fusion constant and the recall@k metric commonly used to validate hybrid search can hide a real regression, and how to tune fusion against task success instead.

One afternoon of dialing alpha to a perfect 0.73 taught me why the boring, un-tunable fusion default quietly wins in production — and how to catch yourself before you memorize your own test set.