Vibe Check: Gemini 4 Carbon's Coding Outpaces Its Judgment
A stronger coder and a win for Google’s loyalists, Carbon arrives just as Fable 5.2 raises the bar again

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From Google
Gemini 4 Carbon by the numbers
- 1Mtoken context window for input and output
- $2 / $10per 1M input / output tokens, introductory price through Nov 30
- 95% offcached input tokens
- 3thinking levels: low, medium (default), and high
From Dec 1, pricing moves to $4 / $20 per 1M input / output tokens. Available in the Gemini API (Google AI Studio and Android Studio), and for Google AI Ultra subscribers in Google Antigravity, the Gemini app, and AI Mode in Search.
Source: Google's Gemini 4 Carbon developer guide.
Meet the frontier team
They put Gemini 4 Carbon through their paces—and the take is live now.
Dan ShipperCofounder & CEO
Katie ParrottStaff writer
Jack ChengSenior editor
Arielle ShipperHead of operations
Kieran KlaassenGeneral manager, Cora
Mike TaylorHead of evals
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