About Gemini 4 Carbon
Gemini 4 Carbon is a Gemini 4 model from Google DeepMind built for code. It writes code on the level of Anthropic's Claude Opus 5.5.
Carbon is made for developer tools and agents: it runs in Antigravity, Google's agent platform, as a full model for long tasks and as a medium version for code editors and IDE extensions. It joins Gemini 4 Argon, released on September 30, 2026, and Argon Max Mode, a version that spends more compute on hard problems.
Gemini 4 Carbon is expected by the end of 2026.
- Developer
- Google DeepMind
- Status
- In testing
- Expected
- Late 2026
- Family
- Gemini 4
- Coding level
- Claude Opus 5.5
- Model ID
- gemini-4-carbon
Gemini 4 Carbon main features
Code on the level of Claude Opus 5.5, a model for code editors and agents, and work with text, images, audio and video.
Code on the level of Claude Opus 5.5
Gemini 4 Carbon is Google's model for code. It writes, refactors and fixes code on the level of Claude Opus 5.5, from a single function to changes across a project.
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Built for code editors and agents
Carbon runs in Antigravity, Google's agent platform for developers, in two sizes: the full model for long agent tasks and a medium version fast enough to suggest code as you type in an editor or IDE extension.
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Part of the Gemini 4 family
Gemini 4 Argon came out on September 30, 2026. Carbon joins it with Argon Max Mode, which spends more compute on hard multi-step problems, and Gemini 4 Flash, the fast model of the family.
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Text, images, audio, video and files
Gemini 4 reads text, images, audio, video and files and keeps up to 1 million tokens in context. Send a call recording, a demo video and a slide deck together and ask what they miss.
Try itWhy use Gemini 4 Carbon on Overchat AI
One account for chat, images and video, on every device.
Superchat AI agent
Superchat Agent automatically routes your message to the model best suited for the task. It can generate images and videos, use the AI tools built into Overchat AI, and learn from your interactions to get better over time.
Chat with images and files
Upload PDFs, spreadsheets, code and images and ask about them in the chat. You can also dictate a message instead of typing it.
Go beyond text
Generate images with Nano Banana and GPT Image and videos with Seedance and Kling in the same account, with the same credits as chat.
On the web, iPhone and Android
Start a chat on your laptop and finish it on your phone. The Overchat AI app has the same models, and your chats stay in one account on every device.
How to use Gemini 4 Carbon on Overchat AI
On the web, iOS or Android.
- 1
Pick Gemini 4 Carbon
Open the model list next to the message field and choose Gemini 4 Carbon.
- 2
Write your prompt
Describe the task: what you need, the format and the length. Attach files or images if the task needs them.
- 3
Get the answer and keep going
Ask a follow-up, ask for a shorter version or switch to another model without starting over.
Explore other models
Models marked Soon are coming to Overchat AI; the rest are available now.
Learn more about AI models
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Gemini 4 Carbon FAQ
If you have any questions,
reach out to us at hello@overchat.ai
Gemini 4 Carbon is Google DeepMind's next Gemini 4 model, built for code. It writes code on the level of Claude Opus 5.5 and runs in Google's tools for developers and agents.
Gemini 4 Carbon is expected by the end of 2026.
They do different jobs. Carbon is built for code and works on the level of Claude Opus 5.5 there; Gemini 4 Argon is the general Gemini 4 model for reasoning, math and work with images, audio and video.
At coding they are on about the same level. Carbon also comes in a medium version that suggests code as you type in an editor.
A version of Gemini 4 Argon that spends more compute on hard, multi-step problems before it answers. It comes out next to Gemini 4 Carbon.
Not yet. On Overchat AI you can use Gemini 4 Argon, Google's newest released model, or Superchat, which picks the model for you. Gemini 4 Carbon will be added once it is out.
Gemini 4 Argon, released on September 30, 2026 and generally available since October 13. It reads text, images, audio, video and files and keeps up to 1 million tokens in context.
