Google has released Gemini 4 Carbon, its most powerful artificial intelligence model to date, for public use. The model, which was initially provided to cybersecurity defenders two weeks prior, is now accessible to developers, enterprises, scientists, and consumers. Google describes Carbon as its strongest model yet, featuring frontier performance in cybersecurity and long-horizon agentic workflows.
Gemini 4 Carbon builds upon the capabilities of its predecessor, Gemini 4 Argon, which was launched recently. While Argon remains suitable for general software engineering and knowledge work, Carbon is designed for tasks that push the boundaries of AI intelligence. These include complex, multi-step coding and debugging, as well as open-ended scientific research and discovery. The model utilizes more tokens than Argon, allowing for thorough exploration and deep reasoning over extended verification loops.
A key new feature of Gemini 4 Carbon is its "agent swarm" capability, previewed in Google Antigravity. This functionality allows a single prompt to initiate a coordinated team of AI agents that can be tracked in real time. Developers can assign Carbon to roles requiring deep reasoning, such as architectural design, coordination, and auditing. These specialized agents can operate in parallel, isolated workspaces, with their work tested by adversarial verifiers. This multi-agent approach aims to tackle decentralized problems by breaking them down into sub-tasks managed by specialized agents.
In terms of performance, Google claims Carbon ranks number one on benchmarks such as CursorBench 4.0, Perplexity's WANDR, and Zapier's AutomationBench, while offering a lower cost per task compared to other leading models. The model also shows significant improvements in scientific and mathematical reasoning, with applications in areas like drug toxicity research. For cybersecurity, Carbon demonstrates state-of-the-art performance in vulnerability detection, exploitation, and patching. It achieved 88.2% on SEC-bench Pro for vulnerability discovery and 71.0% on CWE-bench for patching.
Gemini 4 Carbon is available through the API in Google AI Studio and Gemini for business at the same introductory price as Gemini 4 Argon: $2 per million input tokens and $10 per million output tokens. This introductory pricing is valid through November 30, 2026, after which prices will increase. Google AI Ultra subscribers also gain access to Carbon within the Gemini app, AI Mode in Search, and Google Antigravity.