Cohere Rerank 3.5
Enterprise reranker with 100+ languages for precision retrieval.
About
Rerank 3.5 launched in December 2024 as Cohere's cross-encoder reranking model for enterprise search. It evaluates the query against each candidate document directly rather than comparing vectors, which is why it improves relevance over plain hybrid search. It handles 100+ languages in a 4K context window and slots into RAG pipelines as the second-stage filter. API-only, with usage-based pricing, and it was later superseded by Rerank 4.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
Team-reported: +23.4% over hybrid search, +30.8% over BM25 on financial datasets
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: Launch 2024-12-02 verified via getcoai publication date and Maginative/VentureBeat launch coverage; specs (100+ languages, 4096 context, cross-encoder) corroborated across three launch articles.; Performance claims (+23.4% over hybrid, +30.8% over BM25) are Cohere's internal tests per VentureBeat; labeled as such.; API-only; superseded by Rerank 4 per secondary source..