# The Decoder — Google Deepmind releases Gemini 4 Carbon just two weeks after Argon with gains across the board

- Company: The Decoder (the-decoder.com)
- Announced: 2026-10-28T19:17:58+00:00
- Category: new-model
- Coverage: not counted
- Announcement: yes
- Group: models
- Source: https://the-decoder.com/google-deepmind-releases-gemini-4-carbon-just-two-weeks-after-argon-with-gains-across-the-board/
- Record: https://forck.live/items/28944-google-deepmind-releases-gemini-4-carbon-just-two-weeks-after-argon-with-gains
- Subject: Reporting
- Models affected: Gemini 4 Carbon, Gemini 4 Argon

Google DeepMind released Gemini 4 Carbon, a frontier model it says is built for multi-day autonomous development workflows, two weeks after Gemini 4 Argon. Carbon tops the Artificial Analysis Intelligence Index v5 with 59 points, up from Argon's 50, and takes first place in four of the index's nine individual evaluations. Google says internal teams ran the model for multiple days straight, working through dead ends on its own and handling root-cause analysis and subtle bug fixes in large codebases. Because of its advanced cybersecurity capabilities, Carbon is going through the U.S. government's voluntary pre-testing process and will be available first to selected security experts starting this week, with access expanding through the Fairwind Program. Pricing stays the same as Argon. On Gray Swan's indirect prompt injection benchmark, Google says Carbon cut the attack success rate from 0.7 percent with Argon to 0.0 percent, though it notes prompt injection is not solved and the test appears saturated.

## Evidence

Verbatim from https://the-decoder.com/google-deepmind-releases-gemini-4-carbon-just-two-weeks-after-argon-with-gains-across-the-board/:

> Just two weeks after Gemini 4 Argon, Google DeepMind released Gemini 4 Carbon, its next frontier model. Carbon tops the Artificial Analysis Intelligence Index v5 with 59 points, up from Argon's 50.
> 
> Google says Carbon is built for multi-day, autonomous development workflows. It's closing the gap fast in Artificial Analysis's Coding Agent Index (59 points vs. Argon's 50) but still trails Claude Opus 5.5 (62 points).
> 
> Because of its advanced cybersecurity capabilities, Carbon is going through the U.S. government's voluntary pre-testing process and will only be available to selected security experts at first. Pricing stays the same as Argon.
> 
> Google Deepmind shipped Gemini 4 Carbon just two weeks after Argon, and the new model takes the top spot on the Artificial Analysis Intelligence Index.
> 
> Carbon scores 59 points on the recently updated version 5.0 of the Artificial Analysis Intelligence Index , while predecessor Argon trails at 50. Beyond general gains in agentic tasks and programming, Google highlights capabilities spanning the full cyber defense lifecycle, from detecting and validating vulnerabilities to patching them.
> 
> Built for multi-day coding sessions

---

Record: https://forck.live/items/28944-google-deepmind-releases-gemini-4-carbon-just-two-weeks-after-argon-with-gains
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md