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Gemini 4 Carbon
Meet Gemini 4 Carbon: a frontier model for long-running agentic work and cyber defense, with top benchmark scores and entry pricing from $2 per 1M tokens.
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Gemini 4 Carbon: Built for Demanding Work
This model targets long-running autonomous projects and security defense, combining strong benchmark results with a careful, safety-led release.
- Extended Autonomous WorkflowsCarbon handles difficult, multi-step engineering problems. Internal teams report runs lasting days, working through dead ends to trace and fix subtle bugs across large codebases and low-level systems.
- End-to-End Security DefenseThe model covers vulnerability discovery, validation, and remediation: 88.2% on SEC-bench Pro for real flaw detection, 54.8% on ExploitGym for exploitation, and 71.0% on CWE-bench for root-cause patching.
- Fast Progress from Argon to CarbonFollowing Gemini 4 Argon, released just two weeks earlier, Carbon shows how researchers and models working together advance the frontier while safeguards are strengthened alongside.
How Access to Gemini 4 Carbon Expands
Access is being released in careful stages; this is how the launch sequence unfolds.
Gemini 4 Carbon: Performance and Benchmark Highlights
From the top of the Artificial Analysis Intelligence Index to a 0.0% prompt-injection attack rate, these results show what Carbon can do.
Top Rank on Intelligence Index v5.0
Gemini 4 Carbon scores 59 at the top of the recently updated Artificial Analysis Intelligence Index v5.0, with major gains in coding, agentic tasks, and capabilities important for cybersecurity defense.
WebDev Arena Climbs 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.
Fewer Shortcuts and Cheating Attempts
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.
More Transparent and Honest Output
Internal testing shows Carbon cutting unsupported claims by roughly 2x over Argon, adding methodological caveats to deliverables or withholding blocked actions with a clear list of what remains required.
Strong Defense Against 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%.
Reliable Follow-Through Within Scope
Carbon reduced overreach by 26% and under-service by 29%, delivering more reliable end-to-end execution of multi-step plans that respects project constraints and stays strictly within scope.
Gemini 4 Carbon: Common Questions
Answers to frequent questions about Carbon, from pricing and benchmarks to who can use it first.
What exactly is Gemini 4 Carbon?
It is the next frontier model and the 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.
What does Gemini 4 Carbon cost?
Introductory pricing 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.
Where does Carbon rank on key benchmarks?
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.
Who can access Gemini 4 Carbon today?
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.
How is Carbon better than 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.
What tasks is Carbon designed to handle?
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.
Get Ready for Gemini 4 Carbon
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.