Introducing Rerank 5: precise, efficient enterprise document retrieval
Cohere has released Rerank 5 in Pro and Fast tiers, adding a "Context Focus" feature that pinpoints the most relevant passages and relevance scores calibrated as probabilities. The company reports a score of 82.2 on the BRIGHT benchmark for Pro.
What the article says
Cohere introduces Rerank 5, its latest reranking model for enterprise search, in a post dated October 21, 2026. It comes in two tiers, Pro (ranking quality) and Fast (latency and cost), and joins Embed 5 and Parse 5. Cohere positions it for RAG and agentic workflows, where retrieval quality determines how many tokens an LLM reads.
Three points stand out: Context Focus, an optional feature that returns scored text spans within each document; calibrated relevance scores, presented as the probability that a document is useful so one threshold works across queries; and performance that Cohere says leads its benchmarks. It works on top of existing search without re-indexing, using a relevant_spans parameter. It is available through the Cohere API, Model Vault, Microsoft Foundry and Amazon SageMaker, priced at $0.05 (Pro) and $0.02 (Fast) per million tokens; the performance figures are Cohere's own.
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