Rerank 4 Fast is Cohere's reranking model with a 33K context window and up to 33K output tokens, available from 2 providers, starting at $2.00 / 1M input. Cohere's fourth-generation fast reranking model optimized for low-latency document sorting by semantic similarity to a query.
Specifications
Canonical IDcohere-rerank-4-fast
TypeReranking
StatusActive
CreatorCohereCohere
Providers
Context Window33K tokens
Max Output33K tokens
Input ModalitiesText
Release Date · 10 months ago

Capabilities

Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output0/5
Text·
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandardBatch
Input
$ / 1M
Query
$ / query
Input
$ / 1M
Azure AI Foundry logo
Azure AI Foundry
cohere:rerankv4fast
N/A$0.0020—
Cohere logo
Cohere
rerank-v4.0-fast
$2.00$0.0020$1.00

Cost Calculator

US Dollar ($)
Preset:

Other Models

ModelTierReleasedContextInput / 1MOutput / 1M
Rerank 4 ProPro33K$2.50—
Voyage Rerank 3—32K$0.050—
Voyage Rerank 3 Lite—32K$0.020—
Rerank 3.5—4K——
Voyage Rerank 3.5—32K——
NV RerankQA Mistral 3 4B—————
Rerank 3 English——4K——
Rerank 3 Multilingual——4K——
Voyage Rerank 2.5—32K$0.050—
Voyage Rerank 2.5 Lite—32K$0.020—

Model IDs

azure_ai/cohere-rerank-v4.0-fast
cohere-rerank-4-fast
cohere-rerank-v4-0-fast
cohere/rerank-v4-fast
rerank-v4.0-fast