Google made Gemini 4 Carbon available on November 10, 2026, but the consumer door is narrow. In the Gemini app and AI Mode in Search, only Google AI Ultra subscribers get it, while developers on paid Gemini API plans can use it through Google AI Studio.
If you pay for a cheaper plan, nothing changes in your app today. If you build on the API, the clock matters more, because the introductory price is set to double on November 30, 2026.
TL;DR: Gemini 4 Carbon is now open to paying developers and enterprises, and to AI Ultra subscribers in the Gemini app, AI Mode and Antigravity. Google’s announcement does not mention Pro or free app users. API pricing is $2 per million input tokens and $10 per million output tokens until November 30, 2026, then $4 and $20. Google still points most everyday work at Gemini 4 Argon.
Who can use Gemini 4 Carbon right now
Google’s launch post says Carbon is available to developers, enterprises, scientists and consumers, but each group gets a different door. Consumers need an Ultra subscription to reach it in the Gemini app, AI Mode in Search, or Google Antigravity.
Google’s AI plans page lists two Ultra tiers, Ultra 5x and Ultra 20x, and both include Carbon alongside Argon. That detail matters if you were hoping the cheaper plan would stretch this far.
| Audience | Access | Where |
|---|---|---|
| AI Ultra subscribers | Rolling out | Gemini app, AI Mode in Search, Antigravity |
| Paying developers and enterprises | Available | Google AI Studio, Gemini for business, Gemini API paid tier |
| Scientists | Apply for free six month access | Antigravity highest usage tier |
| Cyber defenders | Application based | Fairwind Program |
Google gives no country list or usage limits in the post, so availability outside the US may vary. That gap is easy to miss until the model simply does not appear in your picker.
Gemini 4 Carbon API pricing and the November 30 change
Google lists the introductory Carbon price at $2 per million input tokens and $10 per million output tokens, the same as Argon. A footnote in the post says that after November 30, 2026, the public access model moves to $4 per million input tokens and $20 per million output tokens.
A team that benchmarks Carbon this month on the cheap rate and ships in December will see its bill roughly double. Budget with the higher number, not the launch one.
Scientists have a separate route. Google says applicants can get Argon and Carbon free for six months through Antigravity’s highest usage tier, subject to eligibility, capacity and selection.
Why Argon is still the everyday pick
Google is not positioning Carbon as a replacement. The post says Argon “remains the ideal choice for the majority of software engineering and knowledge work,” and describes Carbon as the option for harder tasks.
That framing fits what Google said when it first introduced Carbon on October 28, 2026. Its cyber results were the headline there, and we covered them in our earlier Carbon security report: 88.2% on SEC-bench Pro for finding vulnerabilities and 54.8% on ExploitGym, which Google called state of the art.
Google is also previewing a /swarm command in Antigravity that turns a single prompt into a team of coordinated agents you can track in real time. Pairing Carbon on planning and checking with a faster model for the rest is the obvious use, though it is a preview and not a finished product.
For a side by side view of how this stacks up against rival models, our AI model tracker covers the current lineup from Google, Anthropic and OpenAI.
Who should actually pay for Carbon
For most people the honest answer is nobody yet. That gap between a frontier launch and a daily habit is wider than the launch posts suggest.
If you already pay for Ultra, try Carbon on the problems where Argon stalls and keep Argon for everything else. If you are on a lower plan, wait for Google to say whether Carbon will ever leave the top tier.
