Gemini 4 Carbon opens to Ultra subscribers as API prices double

New model for Ultra subscribers

Google has opened Gemini 4 Carbon to Ultra subscribers. The model is accessible through the Gemini app as well as AI Mode in Search and Antigravity.

Pricing change

Google said API prices will double on December 1. That means a cost increase for developers and businesses that access the model through the API.

What it means

Gemini 4 Carbon had previously been made available worldwide. This step clarifies access at the top subscription tier while bringing a pricing change on the API side.