Cohere-rerank-v4.0-fast

CohereKnowledge & Search

Reorder candidate documents by relevance to a query.

API IDCohere-rerank-v4.0-fast
View setup
View usage

Overview

Input
A query and a list of candidate documents.
Output
Ranked document indexes with relevance scores.
Providers
Cohere API
Latest operational check
Healthy
API compatibility
  • Primex Rerank API
Recommended for
  • RAG retrieval
  • Search relevance
Supported features
  • Relevance scores
  • Top n

Make your first request

View full setup 
curl --fail-with-body https://gateway.primexos.com/v1/rerank \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"Cohere-rerank-v4.0-fast","query":"Which result is relevant?","documents":["First result","Second result"]}'

Executing this request uses your account’s API credits.

Sample input → output

InputA search query and two candidate documents
Output preview
results[].index
Ranked source index
results[].relevance_score
Relevance score

Simplified preview based on the published service response contract.

Input requirements

  • Up to 1,000 candidate documents per request
Cohere-rerank-v4.0-proCohere