Cohere: Rerank 4 Fast

cohere/rerank-4-fast

Released Apr 6, 202632,768 context$0.002 per search

Cohere's AI search foundation model for enhancing the relevance of information surfaced within search and RAG systems. Features a 32K context window, multilingual support across 100+ languages, no data pre-processing required, and high performance with lowest latency.

Cohere: Rerank 4 Fast

cohere/rerank-4-fast

Released Apr 6, 202632,768 context$0.002 per search

Cohere's AI search foundation model for enhancing the relevance of information surfaced within search and RAG systems. Features a 32K context window, multilingual support across 100+ languages, no data pre-processing required, and high performance with lowest latency.

Sample code and API for Rerank 4 Fast

OpenRouter normalizes requests and responses across providers for you.

OpenRouter provides a rerank API that reorders documents by relevance to a query. Pass a query and a list of documents, and the model returns them ranked by relevance score.

In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards.

Using third-party SDKs

For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.