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Google rolls out Gemini 4 Carbon to paid API and AI Ultra users

Google has launched Gemini 4 Carbon for paid API and AI Ultra subscribers, offering a 1-million output token limit alongside a preview of a swarm feature in Antigravity.

Screenshot of Google model settings and model card interface displaying Gemini 4 Carbon details, specifications, and pricing.
Image: @testingcatalog

Google has officially released its Gemini 4 Carbon frontier model to paid API developers and Google AI Ultra subscribers across desktop, mobile, and web, according to an announcement from Koray Kavukcuoglu, Google's Chief AI Architect and SVP at Google DeepMind. The expanded availability comes roughly two weeks after Google initially provided the model to cyber defenders, and Google also previewed an upcoming swarm feature inside Antigravity.[3][4][5][2]

Google describes Gemini 4 Carbon as its most capable frontier model for deep, complex work. The company noted that the model is designed for long-horizon agentic tasks spanning terminal-based software engineering, enterprise analysis across dense financial and legal documents, cybersecurity, and scientific reasoning.[6][7]

Settings and model cards shared by TestingCatalog reveal that Gemini 4 Carbon has rolled out to Google Cloud Platform and Agent Studio with a 1-million output token limit. The platform lists promotional pricing of $2.00 for inputs and $10.00 for outputs through November 30, 2026, marked down from standard rates of $4.00 and $20.00.[7]

Showcased use cases and early demonstrations range from 3D development inside Antigravity to an interactive bird song anatomical simulation called SynthBird, which models species including the wood thrush, northern cardinal, and zebra finch.[1][4]

Key facts

  • Google rolled out Gemini 4 Carbon to paid API users and Google AI Ultra subscribers across desktop, mobile, and web.
  • The wider release comes about two weeks after Google supplied Gemini 4 Carbon to cyber defenders.
  • Google previewed a swarm feature inside Antigravity alongside the rollout.
  • Gemini 4 Carbon includes a 1-million output token limit on Google Cloud Platform.
  • Google Cloud Platform model settings list pricing at $2.00 input and $10.00 output through November 30, 2026, discounted from standard $4.00 and $20.00 rates.
  • The model is positioned for autonomous coding agents, multi-step financial and legal document analysis, cybersecurity, and STEM research.

Sources · 6 sources

  1. SB

    Shay Boloor@StockSavvyShayPost on X ·

    $GOOGL just rolled out Gemini 4 Carbon which is its strongest model yet for cybersecurity and scientific research. You're seeing how as AI takes on harder tasks that inference demand keeps growing and Google gets to power it with its own TPUs. https://t.co/PsFwowzBvx

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  2. �A

    🚨 AI News | TestingCatalog@testingcatalogPost on X ·

    GOOGLE 🔥: Gemini 4 Carbon rollout has been officially announced to be available to Gemini Ultra subscribers and APIs. We need it on Pro as well 👀 https://t.co/jlqKE8aFsv

    Open source
  3. TE

    TechmemeArticle ·

    Google rolls out Gemini 4 Carbon to paid API and AI Ultra users two weeks after releasing it to cyber defenders, and previews a swarm feature in Antigravity (Koray Kavukcuoglu/Google) Koray Kavukcuoglu / Google : Google rolls out Gemini 4 Carbon to paid API and AI Ultra users two weeks after releasing it to cyber defenders, and previews a swarm feature in Antigravity — Developers, enterprises, scientists, and consumers can now try our latest frontier model. — SVP, Google DeepMind and Chief AI Architect, Google

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  4. AS

    AshutoshShrivastava@ai_for_successPost on X ·

    Google just dropped Gemini Carbon for Google AI Ultra subscribers on desktop, mobile, and web. I’ve had early access and been playing around with it for coding and 3D Work. Here are 7 incredible things I’ve built with it. First up, Adiyogi Divya Darshanam. Working on this demo was an incredible experience because this place is very close to my heart. Honestly, Gemini Carbon feels like the way forward and a real step up from Argon. All the demo videos in this thread were also recorded by Carbon inside Antigravity. You can play with all the live demos and learn how everything was built on my showcase page linked below.

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  5. TE

    Techmeme@TechmemePost on X ·

    Google rolls out Gemini 4 Carbon to paid API and AI Ultra users two weeks after releasing it to cyber defenders, and previews a swarm feature in Antigravity (@koraykv / Google) (Visit Techmeme dot com for the link and full context!)

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  6. EV

    Evan@StockMKTNewzPost on X ·

    Google $GOOGL just posted this: “Our strongest frontier model, Gemini 4 Carbon, is now available. Built for deeply complex, long-horizon workflows that push a frontier model’s intelligence, Carbon delivers frontier performance in agentic workflows across complex knowledge work, software engineering and web development, cybersecurity, and scientific reasoning.” https://t.co/xUhMGu4BqE

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  7. �A

    🚨 AI News | TestingCatalog@testingcatalogPost on X ·

    BREAKING 🔥: Gemini 4 Carbon is rolling out on Google Cloud Platform and is already available on Agent Studio! > "Our most capable model for deep work, with frontier performance on long-horizon agentic coding, enterprise knowledge work, and scientific reasoning, and a 1M output token limit." Testing time! 👀

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