Gemini 4 Carbon Ultra is available to subscribers

Gemini 4 Carbon Ultra has started to be available to its subscribers. Google started the rollout to wide availability on November 10. The model was initially only available to select cybersecurity advocates when it was introduced in late October. However, developers and companies that pay after two weeks also have access to the model. Therefore, Carbon is now in the hands of a wider audience.

How does Gemini 4 Carbon Ultra access work?

Google AI Ultra starts at $100 per month in the US. Google AI Ultra subscribers can use the model in the Gemini app and AI Mode in Search. It also opened in Carbon, Antigravity. Moreover, Antigravity is Google's artificial intelligence-supported coding platform. Thus, the model can be used in different places, from chat applications to coding environments.

In Search, eligible subscribers can select the Gemini 4 Carbon from the model menu in AI Mode. However, this requires a personal Google account. The option is available to subscribers aged 18 and over in supported countries. There are also daily usage limits. However, a schedule for lower priced packages was not shared.

How does Carbon differ from Argon?

Carbon sits alongside the Gemini 4 Argon, which Google recommends for most coding and information work. However, Carbon uses more tokens when investigating an issue. Token is the small unit that artificial intelligence uses when processing text. The model also controls its own output. So it's better suited for tasks like debugging a bug that spans several parts of the application. In other words, the model comes into play in jobs that need to look at the whole application rather than a single piece.

Google states that Carbon came first in two tests. The first is CursorBench 4.0 for coding, the second is Zapier's AutomationBench benchmark for workflow automation. For this reason, Carbon is highlighted in both software and automation businesses.

Google is also making the /swarm command available for preview in Antigravity. The script turns a single prompt into a project that multiple AI agents will work on. Developers can monitor the progress of agents in real time. For example, Carbon handles the overall design, while faster models can work on individual parts in parallel. This feature is currently in preview.

Price for developers and companies

In addition to Google AI Ultra subscribers, developers can also access Carbon. It can be used in Google AI Studio and Android Studio via the paid Gemini API. Companies can choose the model in Gemini for Business. Thus, Carbon can enter the workflows of teams as well as individual subscribers.

The standard API price is the same as Argon's introductory prices until November 30. $2 is paid for one million entry tokens, and $10 is paid for one million exit tokens. Therefore, teams calculating costs should take into consideration the promotional price limit on November 30. However, both fees will double on December 1.