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Gemini 4 Carbon Frontier Model
Sustained agentic work and state-of-the-art cyber defense in one model
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Gemini 4 Carbon

Gemini 4 Carbon is our strongest frontier model, leading SEC-bench Pro at 88.2% and launching from $2 per 1M input tokens.

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Why Gemini 4 Carbon Leads the Frontier

Carbon is built for sustained agentic work and cyber defense, pairing frontier benchmark results with a measured, safety-first rollout.

  • Sustained Long-Horizon Agentic Workflows
    Carbon is designed for much harder, multi-step engineering problems. Internal teams have seen it run for days, persisting through dead ends to root-cause and patch subtle bugs across large codebases and low-level systems.
  • Full Cybersecurity Defense Lifecycle
    Carbon spans vulnerability detection, validation and remediation: 88.2% on SEC-bench Pro for finding real flaws, 54.8% on ExploitGym for exploitation, and 71.0% on CWE-bench for patching at the root cause.
  • Frontier Pace from Argon to Carbon
    Building on Gemini 4 Argon, launched only two weeks earlier, Carbon shows how researchers and models working hand in hand push the frontier forward while safeguards are strengthened in tandem.

How Gemini 4 Carbon Rolls Out

Carbon access is being phased deliberately; here is the sequence behind the launch.

Gemini 4 Carbon Capabilities and Benchmarks

From the top of the Artificial Analysis Intelligence Index to a 0.0% prompt-injection attack rate, these are the results behind Carbon.

Ranked #1 on Intelligence Index v5.0

Gemini 4 Carbon scores 59 at the top of the recently updated Artificial Analysis Intelligence Index v5.0, with significant gains across coding, agentic tasks and capabilities critical for cybersecurity defense.

WebDev Arena Jump to #4

Better output and artifact quality in full-stack web development lifts Carbon by +89 elo points to #4 with 1768 on WebDev Arena.

Reduced Shortcuts and Cheating

Alignment work cut successful cheating on Terminal-Bench 4.0 to 0.0% with attempts down to 0.4% while accuracy improved, and high-severity misalignment alerts fell almost 80% in internal live coding environments.

Greater Transparency and Honesty

Internal testing shows Carbon cutting unsupported claims by roughly 2x over Argon, putting methodological caveats into the deliverable or withholding blocked actions with a clear list of what remains required.

Resistance to Indirect Prompt Injection

Carbon records a 0.0% attack success rate on Gray Swan's Indirect Prompt Injection Benchmark, resisting every evaluated attempt where Argon previously sat at 0.7%.

Following Through Without Overstepping

Carbon reduced overreach by 26% and under-service by 29%, giving more reliable end-to-end execution of multi-step plans that respects project constraints and stays strictly within scope.

FAQ

Gemini 4 Carbon — FAQ

Common questions about Carbon, from pricing and benchmarks to who can use it first.

1

What is Gemini 4 Carbon?

It is our next frontier model and strongest to date, built for state-of-the-art cybersecurity and long-horizon capabilities. Carbon ranks #1 on the updated Artificial Analysis Intelligence Index v5.0 at 59.

2

How much does Gemini 4 Carbon cost?

The introductory price is $2 per million input tokens and $10 per million output tokens, with cached input tokens at 95% off the input price. After the introductory period, $4 per 1M input and $20 per 1M output applies.

3

Which benchmarks does Carbon lead?

Carbon reaches 88.2% on SEC-bench Pro for finding vulnerabilities, 54.8% on ExploitGym for exploitation and 71.0% on CWE-bench for patching, plus #4 with 1768 points on WebDev Arena.

4

Who can use Gemini 4 Carbon right now?

The first cohort is a hand-picked group of cyber defenders; more trusted partners join over time under the Fairwind Program, and developers, businesses and consumers follow via Google's product surfaces.

5

How does Carbon improve on Gemini 4 Argon?

Carbon delivers more than 2x uplift in generating secure code on internal benchmarks, roughly 2x fewer unsupported claims, a 0.0% prompt-injection attack success rate and stronger scope discipline.

6

What kinds of tasks is Carbon built for?

Complex multi-step engineering such as root-causing and patching subtle bugs across large codebases and low-level systems, plus agentic workflows, scientific tasks, full-stack web development and multimodal understanding.

Be Ready for Gemini 4 Carbon Access

Carbon targets meaningful leaps in software engineering and cyber defense without compromising safety or reliability. Follow the phased rollout via the Fairwind Program, with developer, business and consumer access coming soon.