# Google DeepMind announces Gemini 4 Carbon, a frontier model going to cyber defenders first

Canonical: https://theagenticweekly.com/news/google-deepmind-gemini-4-carbon · Evidence: Reported · First seen: 2026-10-28 17:04 UTC · Source published: 2026-10-28 17:00 UTC · Brief published: 2026-10-28 17:07 UTC · Updated: 2026-10-28 17:07 UTC · Author: Agentic Weekly

> Gemini 4 Carbon is Google DeepMind's new frontier model, announced Oct 28, 2026, two weeks after Gemini 4 Argon. Google calls it its strongest model for cybersecurity and long-horizon tasks; it goes first to a subset of cyber defenders, with developer access promised later at an introductory $2 / $10 per 1M tokens.

## What changed

- Google DeepMind announced Gemini 4 Carbon, which it calls its strongest model, with state-of-the-art cybersecurity and long-horizon capabilities. It builds on Gemini 4 Argon, launched two weeks earlier.
- Access is limited for now: starting this week Carbon goes to a subset of cyber defenders, then to more trusted partners through Google's Fairwind Program, before developers, businesses and consumers get it.
- Price at launch, per the post: the same introductory price as Argon, $2 per 1M input tokens and $10 per 1M output tokens, with cached input 95% off; after the introductory period, $4 input and $20 output.
- Google's benchmark claims (evaluated without guardrails): 88.2% on SEC-bench Pro, 54.8% on ExploitGym, 71.0% on CWE-bench, #1 on the Artificial Analysis Intelligence Index v5.0 at 59, and #4 (1769) on WebDev Arena.
- Google says Carbon is built for sustained agentic engineering work, more than doubles Argon's success rate at generating secure code on internal benchmarks, and scored 0.0% attack success on Gray Swan's indirect prompt injection benchmark.

## In the source's words

> "Gemini 4 Carbon is our strongest model with state-of-the-art cybersecurity and long horizon capabilities."
> (Google DeepMind, announcement post, https://deepmind.google/blog/gemini-4-carbon-our-next-frontier-model/)

> "Starting this week, we will make Carbon available to a subset of cyber defenders and will gradually phase access to additional trusted partners through our Fairwind Program"
> (Google DeepMind, announcement post, https://deepmind.google/blog/gemini-4-carbon-our-next-frontier-model/)

> "Internally, our teams have seen Carbon run for days to persist through dead ends to tackle complex, multi-step engineering tasks"
> (Google DeepMind, announcement post, https://deepmind.google/blog/gemini-4-carbon-our-next-frontier-model/)

## What we have not verified

- We did not run this model; it is not yet available to developers.
- All benchmark numbers and internal results are Google's own claims; we did not reproduce them.
- The post gives no API model ID, context window, release date for developers or end date for the introductory price.

## Timeline

- Source published: 2026-10-28 17:00 UTC
- First seen by our watcher: 2026-10-28 17:04 UTC (via Google DeepMind blog feed), 4 minutes after the source's timestamp
- Brief published: 2026-10-28 17:07 UTC

## Sources

- [Google DeepMind: Gemini 4 Carbon announcement](https://deepmind.google/blog/gemini-4-carbon-our-next-frontier-model/) (primary source) (fetched 2026-10-28)

## Related

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## How to cite

Agentic Weekly, "Google DeepMind announces Gemini 4 Carbon, a frontier model going to cyber defenders first", published 2026-10-28 17:07 UTC, https://theagenticweekly.com/news/google-deepmind-gemini-4-carbon