Leak: Gemini 4 Carbon will require Google AI Ultra plan or API key
testingcatalog · x · 2026-11-10
testingcatalog spots an updated Google AI Studio upgrade pop-up stating 'Gemini 4 Carbon needs a Google AI Ultra plan or a Gemini API key' — signaling Carbon will ship to Ultra subscribers and via API. He adds that while Gemini 4 Argon was expected to follow the same pattern, Carbon may also appear in the Gemini app for Pro users right away. Unverified leak.
Related event: Gemini 4 Carbon Reportedly Requires Ultra Subscription or API Key(2 posts)→
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