Google Gemini 4 Carbon Launches for Developers and Ultra Users
Google has made Gemini 4 Carbon available to developers, businesses, scientists and AI Ultra subscribers, pricing it the same as Argon for the hardest coding and research jobs.
SUMO· the number puzzle
Dialo· learn languages by speaking
ediviewer· read EDI files like documents
giftdetect· the right gift in minutesGoogle has opened Gemini 4 Carbon to developers, businesses, scientists and Google AI Ultra subscribers. Two weeks ago, the model was limited to a small group of cybersecurity defenders through the company's Fairwind Program.
Carbon is positioned as Google's next frontier model, with the company calling it state-of-the-art in cybersecurity and long-horizon tasks. Gemini Argon stays the default choice for most coding and office work, while Carbon targets jobs that push a model to its limits, such as complicated debugging or open-ended scientific research. It uses more tokens than Argon, spending the extra effort exploring options and verifying its answers.
Benchmarks and early results
According to Google, Carbon ranked first on CursorBench 4.0, Perplexity's WANDR and Zapier's AutomationBench, at less than half the cost per task of the next best model from another company.
The company points to several use cases. Legal and finance teams can feed it dense documents full of charts and tables, and it keeps to strict formatting when building spreadsheets, presentations and reports. When building web apps, it keeps testing its code, recovers from errors and checks how the finished interface looks. Wiz used it to scan two major SaaS providers, and the model found 0-day vulnerabilities in under two hours, work that would normally take weeks. Drug toxicity research firm Axiom Bio says Carbon helped it find toxicity mechanisms its team had not discovered before, and it is moving production scientific analyses and agents to Carbon and Argon.
Developers also get an early look at /swarm in Google Antigravity, where Carbon handles design, coordination and review while lighter, faster models work on the rest in parallel.
Availability and pricing
Google AI Ultra subscribers will see Carbon roll out in the Gemini app, AI Mode in Search and Google Antigravity. Paying developers and businesses can use it through the API in Google AI Studio and Gemini for business at Argon's introductory rate of $2 per million input tokens and $10 per million output tokens.
Scientists can apply for a chance at six months of free access to both models, and cybersecurity defenders can apply to the Fairwind Program.
Apps worth a look
SUMO: the number puzzleTap the right tiles, add them up, hit the target. Easy to learn, hard to master. Free, for all ages.
Dialo: learn languages by speakingTalk to an AI conversation partner; every sentence comes back corrected and explained in your language. 9 languages, A1 to C2.
ediviewer: read EDI files like documentsOpen EDIFACT and X12 messages, see every segment explained, convert to JSON/XML, export PDF and Excel. Runs locally, no upload.
giftdetect: the right gift in minutesPick who it is for, the occasion and their personality. The search engine reads product descriptions from local shops and ranks what fits. Free, no sign-up.
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