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VoyageAI by MongoDB · Rerank model

rerank-2.5-lite

mongodb/rerank-2.5-lite
  • Rerank
Released Jul 27, 2026

rerank-2.5-lite is a reranker optimized for both latency and quality, delivering a 7.16% improvement in retrieval accuracy over Cohere Rerank v3.5 across 93 datasets. It also outperformed Cohere Rerank v3.5...

Specifications

Input
one query and up to 1,000 documents
Output
relevance score per document, sorted; top_n to keep the best
Billing
per token across all query–document pairs

Use it

POST /api/v1/rerank · MCP rerank · full reference

curl https://omnirail.org/api/v1/rerank \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"mongodb/rerank-2.5-lite","query":"best espresso machine","documents":["brass lever espresso machine","a bicycle","coffee grinder"],"top_n":2}'