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Google Rolls Out Gemini 4 Carbon to AI Ultra Users

Confirmed

Technology Desk

In Short: Today, Google announced the availability of Gemini 4 Carbon to developers, enterprises, and consumers through the Gemini app and AI Mode in Google Search, following its initial release to cybersecurity defenders two weeks ago.

Google; Google Gemini logos
Logos: Google (Public domain); Google Gemini (Public domain)

Google’s Gemini 4 Carbon: An AI Team From ONE Prompt. AI Operator School 2.0 — Taught by AI

Gemini 4 Carbon is now accessible via the API in Google AI Studio and Gemini for business, priced at $2 per million input tokens and $10 per million output tokens, the same as Gemini 4 Argon.

According to Google, Carbon is the strongest model with frontier performance in cybersecurity capabilities and long-horizon agentic workflows, suitable for complex knowledge work, software engineering, and scientific reasoning.

Developers can use Carbon for roles that demand deep reasoning, such as architectural design, coordination, and auditing, while pairing it with faster, lighter models for parallel isolated workspaces and adversarial verifiers.

Carbon uses more tokens on hard problems, making costly tasks exceed the per-token rate, as noted by SQ Magazine.

According to Google, Carbon is currently the best model available for cybersecurity tasks and excels at lengthy, complex coding projects.

Carbon leads several important AI tests, including SEC-bench Pro, ExploitGym, and CWE-bench, according to Google's published benchmark results.

What this adds

Gemini 4 Carbon is rolling out to paid API and AI Ultra users two weeks after its initial release to cybersecurity defenders.

Carbon's capabilities are being previewed in Google Antigravity's /swarm feature, allowing developers to coordinate several agents on one task.

Background

Google's Gemini 4 Carbon model excels in cybersecurity and coding benchmarks, outperforming competitors like Claude and GPT-6 Astra.

What's confirmed

What's still developing

Sources