rerank-v4.0-fast

Name: rerank-v4.0-fast
Author: Cohere

rerankproprietary

A lighter version of rerank-v4.0-pro for low latency and high throughput use-cases. For new projects, use rerank-v5.0-fast .

Context

32K

Capabilities

Show unsupported (8)

No supported capabilities recorded.

Details

ProviderCohere

Creatorcohere

Familyrerank

Licenseproprietary

Statusactive

Typererank

Input modalitiestext

Output modalitiestext

Open weightNo

Parameters—

Architecture—

Context window32K tokens

Max input—

Max output—

Reasoning tokens—

Knowledge cutoff—

Release date—

Sourceofficial

Endpoints

rerankPOST

https://api.cohere.com/v2/rerank

Family Comparison: rerank

Model	Perf	Speed	Context	Max out
rerank-english-v3.0	—	—	4K	—
rerank-multilingual-v3.0	—	—	4K	—
rerank-v3.5	—	—	4K	—
rerank-v4.0-fast	—	—	32K	—
rerank-v4.0-pro	—	—	32K	—
rerank-v5.0-fast	—	—	32K	—
rerank-v5.0-pro	—	—	32K	—

API

GET/v1/models/cohere/rerank-v4.0-fast

rerank-v4.0-fast

A lighter version of rerank-v4.0-pro for low latency and high throughput use-cases. For new projects, use rerank-v5.0-fast .

Changes · 6 entries

rerank-v4.0-fastupdateca7a400Nov 2, 2026, 03:02 AM

descriptionA light version of rerank-v4.0-pro , this is a multilingu...→A lighter version of rerank-v4.0-pro for low latency and ...

rerank-v4.0-fastupdate4e8b6afOct 21, 2026, 06:35 AM

descriptionA light version of rerank-v4.0-pro , this is a multilingu...→A lighter version of rerank-v4.0-pro for low latency and ...

rerank-v4.0-fastupdateb301ebeMar 23, 2026, 11:47 PM

descriptionUnique per deployment→A light version of rerank-v4.0-pro , this is a multilingu...

context_window32000

page_urlhttps://docs.cohere.com/docs/models#rerank-v4.0-fast

endpoints["rerank"]

rerank-v4.0-fastupdate2b100acMar 23, 2026, 05:30 AM

familyrerank

licenseproprietary

open_weightno

rerank-v4.0-fastupdate7a4f1f6Mar 22, 2026, 05:43 AM

taglineText→Unique per deployment

rerank-v4.0-fastcreateb50649fMar 21, 2026, 11:58 PM