# Cohere Rerank 4 Pro

> Cohere Rerank 4 Pro is a proprietary language model from Cohere, released on 11 Dec 2025. It accepts text and generates text, with a 32K-token context window and up to 32K output tokens per response.

Source page: https://www.aimodel.directory/models/rerank-v4-0-pro
Last verified: 21 Oct 2026

## Specifications

- **Developer:** Cohere
- **Release date:** 11 Dec 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)
- **Weights:** Proprietary (API only) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)
- **Context window:** 32K (32,000 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)
- **Max output:** 32K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)
- **Input:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)
- **Reasoning mode:** No (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)
- **Tool calling:** No (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/rerank-v4-pro.toml)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| Vercel AI Gateway | – | – | – | 32K |

## FAQ

### What is the context window of Cohere Rerank 4 Pro?

Cohere Rerank 4 Pro has a context window of 32,000 tokens (32K) and can generate up to 32,000 tokens in a single response, according to models.dev.

### Is Cohere Rerank 4 Pro open source?

No. Cohere Rerank 4 Pro is a proprietary model; Cohere has not released its weights. It is available through APIs including Vercel AI Gateway.

### When was Cohere Rerank 4 Pro released?

Cohere released Cohere Rerank 4 Pro on 11 Dec 2025, according to models.dev.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "Cohere Rerank 4 Pro", https://www.aimodel.directory/models/rerank-v4-0-pro