Google Launches Gemini 4 Hydrogen Across Search and Gemini App
Smartor 편집팀
November 13, 2026
Featured image: AI-generated explanatory illustration of AI computing, not a photograph of actual Google hardware or facilities.
U.S. technology company Google introduced Gemini 4 Hydrogen on November 12 and said it was beginning a global rollout across the Gemini app, Google Search, and developer and enterprise services. The new AI model takes over the fast-response, everyday-work role previously filled by Gemini 3.8 Flash.
Google said Hydrogen would also be available through the Gemini API, AI Studio and Gemini for business. Access in its Antigravity development platform is available to paid Google AI Pro and Ultra subscribers. Whereas the previously announced Gemini 4 Carbon and Argon focus on complex, long-horizon reasoning, Hydrogen emphasizes speed and efficiency in recurring tasks such as writing code and executing tools.
A million-token context window and four thinking levels
Hydrogen has a one-million-token input context window. Tokens are the units an AI model uses to process text and other data. Google announced API prices of $1.50 per million input tokens and $7.50 per million output tokens, with the same rates applying across the full context window.
The model has four thinking levels: low, medium, high and a new xhigh setting. High is the default. Google said that at that default setting, Hydrogen completed tasks 2.5 times faster than 3.8 Flash and reduced fabricated claims by more than fivefold. Those figures are company-reported evaluation results, rather than a guarantee of identical speed or accuracy across every service and task.
Search rollout targets complex questions and a broader set of links
In a separate announcement the same day, Google Search product vice president Robby Stein said Hydrogen was available globally in Search for all users. Google said the upgrade improved its handling of multipart questions, typos and detailed instructions, alongside more visual responses such as images and comparison tables.
The company also said it had strengthened query fan-out, a technique that breaks a question into subtopics and searches them simultaneously, to connect responses with a wider range of relevant websites. It announced language-understanding improvements across supported AI Mode languages. The changes describe how Search works; they do not establish increased visibility or traffic for any particular website.
Ars Technica also reported that Hydrogen was replacing 3.8 Flash across Google’s products. The publication contrasted Hydrogen’s broad availability at launch with the more restricted initial access offered for Carbon and Argon.