Google releases Gemini 4 Carbon

Google announced the Gemini 4 Carbon AI model and made it available to a wider audience, effectively limited to AI Ultra subscribers paying $250.
Google announced the release of the Gemini 4 Carbon AI model. A separate Google blog post describes its availability.
The model was rolled out to a wider audience, but with an important caveat: “wider audience” here refers to subscribers paying $250 for the AI Ultra plan.
If a wider audience can be called subscribers paying $250 for the AI Ultra plan.
Why it matters
AnalysisIt highlights how access to new AI models is increasingly gated behind premium subscriptions rather than broad free availability.
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Google releases Gemini 4 Carbon, but access is limited to Ultra and paid developers
Gemini 4 Carbon is now available in Google AI Studio, the Gemini API, Antigravity, the Gemini app and Google Search AI mode, though early access is restricted.
Google AI Studio: Free Gemini API Keys
Official Google sandbox: get free Gemini 2.0/1.5 API keys without a credit card, setup system prompts, and test the 2M token context window. Limits & guide 2026.
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Gemini Flash & Pro (Google Gemini)
A family of multimodal models from Google DeepMind that combines a record context window (up to 2 million tokens), extreme generation speed (over 150 tokens/sec), and native perception of video and audio.