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Gemini 4 Hydrogen

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Intro

Gemini 4 Hydrogen is the fast model in Google’s Gemini 4 family, officially launched on 12 November 2026. In the official blog Introducing Gemini 4 Hydrogen, dated Nov 12, 2026, Koray Kavukcuoglu, SVP at Google DeepMind and Chief AI Architect at Google, wrote: “Today, we’re introducing Gemini 4 Hydrogen, bringing cutting-edge intelligence to everyone — with speed and efficiency for everyday coding and agentic workflows.” Officially, Gemini 4 Carbon and Gemini 4 Argon remain the frontier models for deep, long-horizon reasoning on the hardest problems, while Hydrogen is built for rapid execution across diverse agentic workflows — standing on its own, or pairing with Carbon and Argon in multi-model workloads.

At 18:02:36 UTC the same day, the official @GoogleDeepMind account posted: “Meet Gemini 4 Hydrogen: built for rapid coding, multimodal synthesis, and everyday workflows. It finishes tasks 2.5x faster than 3.8 Flash and surpasses Argon on the Artificial Analysis Intelligence Index.” @GeminiApp announced it at 18:03:39 UTC for fast, everyday help; the blog’s author @koraykv posted the launch at 18:07:43 UTC; and @Google followed at 18:09:08 UTC. Robby Stein, VP of Product for Google Search, posted from @thefox at 18:11:43 UTC that this is the biggest model upgrade to Search yet and is available now for all users globally. Companion posts include the developer blog Gemini 4 Hydrogen: everyday coding and agentic workflows for developers, the Search explainer Google Search gets a major upgrade with Gemini 4 Hydrogen, and the Gemini 4 Hydrogen model card. This site’s sitemap scan shows those official blog posts and the model card as new URLs since the previous 00:32 pass; google/gemini-4-hydrogen and a Cursor model page also appeared in the same window.

According to Google, Hydrogen scores 51 on the Artificial Analysis Intelligence Index at its default high thinking level, ahead of Argon’s 50, and 54 at its highest xhigh setting, while often finishing tasks faster than models in its class. It is priced flat across the entire 1 million-token context window at $1.50 per million input tokens and $7.50 per million output tokens. Versus Gemini 3.8 Flash, Google says it finishes tasks 2.5 times faster at the high default, raises Terminal-Bench 4.1 from 18.2% to 57%, and cuts fabricated claims by more than 5x. It offers four thinking levels — low, medium, high (default), and a new xhigh tier — with native 1 million-token input and up to 1 million output tokens. Google also says it is introducing Orchestrator in Google Antigravity to switch dynamically between models such as Carbon and Hydrogen in the same session; on Terminal-Bench 4.0, Google says Orchestrator reached near-Carbon task success rates while, on average, using 24% less quota and finishing 19% faster.

On availability, Google says Hydrogen is rolling out globally starting today: developers can use it in AI Studio, Android Studio, and all tiers of the Gemini API; enterprises can use it in Gemini for business, Google Antigravity, and Gemini in Google Sheets for eligible subscriptions; everyone can use it in the Gemini app model drop-down and in Google Search, with Google AI Pro and Ultra subscribers also getting it in Antigravity, Gemini in Chrome, and Gemini in Sheets. Free users in the Gemini app get Hydrogen via auto model selection when it is the appropriate model. @antigravity confirmed at 18:18:29 UTC that it is currently available to paid plans including Pro, Ultra, and enterprise customers.

Key points:

Explain

Why it matters

This is a formal name Google published on 12 November 2026 through an official blog and the DeepMind, product, and Search accounts — not the earlier billing-catalog or leak discussion. In the previous 00:32 scan, public material was still not enough to treat an official launch as confirmed. In this window (from about 18:02 UTC), the official blog and accounts announced that Hydrogen is rolling out across Search, the Gemini app, the API, AI Studio, and paid Antigravity. For anyone tracking the Gemini 4 split (Carbon / Argon / Hydrogen) and fast agentic models, this is a distinct name worth its own entry.

This page only restates official public material. The Intelligence Index scores, the 2.5× speed claim, Terminal-Bench figures, pricing, Orchestrator’s “24% less quota and 19% faster,” and other internal or partner metrics are company statements. This page does not independently reproduce them.

Limits

The public materials do not include a complete, independently reproducible eval table, and they do not present Orchestrator as a separately callable foundation model. Free users in the Gemini app mainly get Hydrogen through auto model selection and may not be able to pick it manually. Do not treat this entry as a guarantee of production coding quality, Search quality, or safety. Earlier billing-catalog or leak talk about “Gemini 4 Hydrogen / Helix” is not a substitute for the 12 November official launch.

Usage

  1. Read the official blog at https://blog.google/innovation-and-ai/models-and-research/gemini-models/introducing-gemini-4-hydrogen/ , and cross-check the developer blog at https://blog.google/innovation-and-ai/technology/developers-tools/build-with-gemini-4-hydrogen/ , the Search explainer at https://blog.google/products-and-platforms/products/search/gemini-4-hydrogen-search-upgrade/ , the model card at https://deepmind.google/models/model-cards/gemini-4-hydrogen/ , the @GoogleDeepMind announcement at https://x.com/GoogleDeepMind/status/2120940338869055788 , the @Google post at https://x.com/Google/status/2120941982004523367 , and Koray Kavukcuoglu’s post at https://x.com/koraykv/status/2120941627229536511 ;
  2. Follow the official instructions to select Gemini 4 Hydrogen in Google AI Studio / the Gemini API, or try it in the Gemini app, Google Search, and paid Google AI Pro / Ultra Antigravity; the OpenRouter listing is at https://openrouter.ai/google/gemini-4-hydrogen and the Cursor page is at https://cursor.com/docs/models/gemini-4-hydrogen ;
  3. When citing the Intelligence Index, the 2.5× speed claim, Terminal-Bench, pricing, or Orchestrator quota figures, attribute them to the 12 November 2026 official blog or announcement posts and recheck the upstream source;
  4. Do not describe Gemini 4 Hydrogen as Gemini 4 Carbon, Gemini 4 Argon, or DeepPrinciple’s Hydrogen-1.0, and do not describe Antigravity Orchestrator as a separate foundation model; this page only restates the official blog and announcement posts — recheck the upstream sources before citing them externally.

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