Cohere Rerank 4 Pro
Cohere
Cohere's quality-tier reranking model, the newest generation of its foundational ranking family. Rerank 4 Pro reorders an initial candidate set against a query for state-of-the-art relevance on complex queries, over English and non-English documents as well as semi-structured JSON, with a 32,000-token context window. Reranking is the second stage of a retrieval pipeline, applied after a vector or keyword search has produced candidates.
Strengths
- Quality tier of Cohere's newest foundational ranking family
- Handles complex queries over English and non-English documents
- Reranks semi-structured JSON, not just plain text
- 32,000-token context window
- Billed per search query, so cost scales with traffic rather than document length
Caveats
- Proprietary - Cohere API only
- A reranker, not a generative model - it reorders candidates and returns relevance scores
- Requires a first-stage retriever to produce the candidate set
- Cohere does not publish a release date or per-query price on its model documentation
- Vendor
- Cohere
- Context Window
- 32,000 tokens
- License
- Proprietary
- Modalities
- text
Capabilities
Vision
Audio
Video
Tool Use
Resources
Pricing
Billed per search query rather than per token, so cost scales with traffic instead of document length. See Cohere pricing for current rates.