The plain-English version
Reordering an initial set of retrieved candidates using a second relevance assessment.
Why it matters
It can improve which evidence reaches the model without changing the underlying collection.
Let’s make it click
An initial search finds twenty policy sections, then a reranker selects the most relevant five.
Vibe Bro’s heads-up
Reranking cannot recover a document that the initial retrieval step never found; evaluate both stages separately.
The docs behind it
Documentation links checked .
Editorial review · October 28, 2026
Supported: Reranking is a second-stage ordering of retrieved candidates, so absent first-stage candidates are not recovered by reranking alone.