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Cohere Rerank 5: Pro takes 11.7s, Fast takes 4.1s — here's how to pick the tier your RAG pipeline actually needs

Rerankers are the quiet layer of every RAG stack. The retriever fetches candidates; the reranker decides which ones actually deserved it. Cohere just shipped Rerank 5 — and did something the reranker market never had before: it made the quality-vs-latency tradeoff an explicit menu with two tiers. E…

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  1. 2026-10-23 09:28 · DEV Community — Machine Learning
    Cohere Rerank 5: Pro takes 11.7s, Fast takes 4.1s — here's how to pick the tier your RAG pipeline actually needs

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