Google announces Gemini 4 Carbon access across paid products

Google said November 10 that Gemini 4 Carbon is available through an API for paying developers and enterprises, while access for Google AI Ultra subscribers is rolling out across several products.

The distinction separates the company’s stated API access from a rollout to subscribers. Google names Google AI Studio and Gemini for business as the paid API routes. For Google AI Ultra subscribers, it names Google Antigravity and AI Mode in Search, as well as the Gemini app, as rollout destinations.

A separate Cursor evaluation offers one view of a named Carbon configuration on coding-agent tasks. Cursor’s CursorBench 4.0 page lists a Score of 60.4% for “Gemini 4 Carbon High.” The benchmark uses ambiguous tasks spanning multiple files from real Cursor sessions, according to Cursor.

Cursor cautions that results vary and that small differences between scores may not be statistically meaningful. Its displayed Score is specific to that evaluation; it should not be read as a general coding success rate.

The Google announcement and the Cursor benchmark address different questions: Google describes where customers can access the model, while Cursor measures a named configuration on its own tasks.