# Gemini 4 Carbon

Canonical HTML: [Read this page on Rising](https://rising.dev/models/gemini-4-carbon/)

Google · Preview

Announced 28 Oct 2026 · Reviewed 2 Nov 2026

Google describes Gemini 4 Carbon as a model for sustained engineering and cybersecurity tasks. It plans initial access for selected cyber defenders, with broader access to follow.

- Reviewed tasks: Coding, Research
- Reviewed modalities: Unknown
- Deployment paths: Unknown
- Focus / inputs: Engineering and cybersecurity; input and output contract not specified
- Availability / restrictions: Google reports engagement in US government pre-release testing and announces selected cyber-defender access starting the week of 28 October. Further trusted Fairwind partners and broader developer, business and consumer access are planned.
- Licence category: Unknown
- Licence / terms: Public weight availability and licence terms are not established by the announcement.

## Variants, limits and list prices

Values are copied from the linked first-party pages as stated, with the date each group was checked. Unknown means the pages checked do not state the value. Prices are list prices, not a quote or a ranking.

### Gemini 4 Carbon

- API identifier: Unknown
- Released: Unknown
- Status and retirement: Government pre-release testing process; selected defender rollout announced.
- Lifecycle checked: Checked 2 Nov 2026
- Context window: Unknown
- Max input: Unknown
- Max output: Unknown
- Rate limits: Unknown
- Limit notes: Unknown
- Limits checked: Checked 2 Nov 2026
- Base input price: Unknown
- Base output price: Unknown
- Cache-read price: Unknown
- Price conditions: Unknown
- Prices checked: Checked 2 Nov 2026
- Knowledge cutoff: Unknown
- Cutoff checked: Checked 2 Nov 2026

- Gemini 4 Carbon: Current effective pricing is not established. For its future launch, Google announces $2 input and $10 output per million tokens, with cached input 95% off. It states subsequent rates of $4 input and $20 output per million tokens, without a transition date. The announcement does not specify context limits, an API ID or a knowledge cutoff.

## Parameters and weights

Unknown: the first-party pages checked publish no parameter count or weights.

## Sources

- [Google announcement](https://blog.google/innovation-and-ai/models-and-research/gemini-models/introducing-gemini-4-carbon/)

## More from Google

- [Genie 4](https://rising.dev/models/genie-4/)
- [EmbeddingGemma 2](https://rising.dev/models/embeddinggemma-2/)
- [Gemini 4 Argon](https://rising.dev/models/gemini-4-argon/)

[Release entry](https://rising.dev/changes/#gemini-4-carbon-preview) · [Back to the model list](https://rising.dev/models/#gemini-4-carbon) · [Compare Gemini 4 Carbon with other models](https://rising.dev/models/?compare=gemini-4-carbon#comparison-title)