LiteLLMModels

Rerank V4.0 Fast API Pricing

As of October 10, 2026, Rerank V4.0 Fast costs $2.00 per 1K queries on Cohere. It has a 32,768-token context window and returns up to 32,768 tokens per response.

By CohereModel ID rerank-v4.0-fastPrices updated Checked
Input
$0 / 1M tokens
Output
$0 / 1M tokens
Context window
32,768 tokens
Max output
32,768 tokens
Providers
1
Added to LiteLLM
September 8, 2026

Rerank V4.0 Fast pricing by provider

1 listing across 1 provider. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

ProviderModel name in LiteLLMInputOutputPer 1K queriesContext
Coherererank-v4.0-fast$0$0$2.0032K

Use Rerank V4.0 Fast with LiteLLM

Call Rerank V4.0 Fast through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/rerank. LiteLLM tracks the cost of every request at these prices.

Python SDK
from litellm import completion

response = completion(
    model="rerank-v4.0-fast",
    messages=[{"role": "user", "content": "Hello!"}],
)
Proxy config.yaml
model_list:
  - model_name: rerank-v4.0-fast
    litellm_params:
      model: rerank-v4.0-fast
      api_key: os.environ/COHERE_API_KEY
Call the proxy
curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "rerank-v4.0-fast",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Rerank V4.0 Fast FAQ

How much does Rerank V4.0 Fast cost?

Rerank V4.0 Fast costs $2.00 per 1K queries on Cohere.

What is the context window of Rerank V4.0 Fast?

Rerank V4.0 Fast has a 32,768-token context window and returns up to 32,768 tokens per response.

Which providers offer Rerank V4.0 Fast?

Rerank V4.0 Fast is available from Cohere through LiteLLM, using the model name rerank-v4.0-fast.

How do I call Rerank V4.0 Fast with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="rerank-v4.0-fast", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/rerank from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

When did LiteLLM add Rerank V4.0 Fast?

Rerank V4.0 Fast was added to LiteLLM's model price file on September 8, 2026.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:

LiteLLM docs: Cohere.

Provider pages: Cohere.