# Embed v4.0

> Embed v4.0 is a proprietary language model from Cohere, released on 15 Apr 2025. It accepts text and generates text, with a 128K-token context window and up to 2K output tokens per response.

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

## Specifications

- **Developer:** Cohere
- **Release date:** 15 Apr 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)
- **Weights:** Proprietary (API only) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)
- **Context window:** 128K (128,000 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)
- **Max output:** 2K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)
- **Input:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)
- **Reasoning mode:** No (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)
- **Tool calling:** No (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/vercel/models/cohere/embed-v4.0.toml)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| Vercel AI Gateway | – | – | – | 128K |

## FAQ

### What is the context window of Embed v4.0?

Embed v4.0 has a context window of 128,000 tokens (128K) and can generate up to 1,536 tokens in a single response, according to models.dev.

### Is Embed v4.0 open source?

No. Embed v4.0 is a proprietary model; Cohere has not released its weights. It is available through APIs including Vercel AI Gateway.

### When was Embed v4.0 released?

Cohere released Embed v4.0 on 15 Apr 2025, according to models.dev.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "Embed v4.0", https://www.aimodel.directory/models/embed-v4-0