Google Puts Gemini 4 Hydrogen in Search for All: What Changes & When
Google has put Gemini 4 Hydrogen into Search for all users worldwide, calling it the biggest upgrade to Search yet, with faster answers and more links.
Image: Wikimedia Commons / Asoundd
MOUNTAIN VIEW, California — Google on November 12 put its new Gemini 4 Hydrogen model into Google Search for all users worldwide, calling it the biggest model upgrade to Search yet.
The launch, announced by Google DeepMind, makes Hydrogen the third Gemini 4 model to reach the public in under a month. Unlike the first two, which were limited to paying subscribers, it is available to everyone at no extra cost.
- Google has put Gemini 4 Hydrogen into Search for all users globally, calling it the biggest model upgrade to Search yet.
- Hydrogen scores 51 on the Artificial Analysis Intelligence Index, ahead of Gemini 4 Argon at 50, and 54 at its highest level.
- Google says Hydrogen works 2.5 times faster than Gemini 3.8 Flash and cuts fabricated claims by more than five times.
- Developers pay $1.50 per million input tokens and $7.50 per million output tokens, with a 1 million-token context window.
What Is Gemini 4 Hydrogen and How Fast Is It?
Hydrogen is the speed-focused member of the Gemini 4 family. Google DeepMind positions Carbon and Argon for deep, long-horizon reasoning, while Hydrogen is built for rapid execution across agentic workflows — tasks in which an AI carries out several steps on its own, such as writing code and running tests.
The model offers four thinking levels — low, medium, high and a new xhigh tier. At its default high setting, it finishes tasks 2.5 times faster than Gemini 3.8 Flash, according to Google's own tests. On Terminal-Bench 4.1, a test of real software work, it scored 57 percent, against 18.2 percent for 3.8 Flash.
How Gemini 4 Hydrogen Changes Google Search
The biggest change for ordinary users is in Search. Robby Stein, vice president of product for Google Search, called Hydrogen the biggest model upgrade to Search yet. Google says Search will now understand questions asked in a natural flow of thought, including multi-part queries and highly specific requests.
Google is also upgrading query fan-out, which turns one question into several searches behind the scenes, connecting users to a broader range of links. Answers will carry more visual material, including images and comparison tables. Google has not said whether Hydrogen writes every AI response in Search or only some.
Gemini 4 Hydrogen Price, Availability and How to Try It
Hydrogen is rolling out starting today. In the Gemini app it appears in the model dropdown, and in Search it is available to all users globally. Developers can build with it through the Gemini API in AI Studio and Android Studio, and businesses through Gemini for business.
For developers, Hydrogen is priced flat across its 1 million-token context window at $1.50 per million input tokens and $7.50 per million output tokens. Google says safety is improved too: overreach in agentic tasks falls by up to 81 percent, and the model is more than 2.3 times more resilient to indirect prompt injection attacks.
| Measure | Gemini 4 Hydrogen | Gemini 3.8 Flash |
|---|---|---|
| Task speed | 2.5 times faster | Baseline |
| Terminal-Bench 4.1 score | 57 percent | 18.2 percent |
| Fabricated claims | Cut by more than 5 times | Baseline |
| Intelligence Index | 51 at high, 54 at xhigh | Not stated by Google |
| Context window | 1 million tokens | Not stated by Google |
The launch caps a busy month for Google's AI division. Anthropic launched its Claude Fable 5.2 and Mythos 5.2 models on the same day, and is set to price its shares on November 18. Google has also been pressing ahead with its own AI chips.
Frequently Asked Questions
Is Gemini 4 Hydrogen free to use in Google Search?
Yes. Google said Hydrogen is available globally in Google Search for all users, not only people paying for its AI plans.
How is Gemini 4 Hydrogen different from Gemini 4 Argon and Carbon?
Carbon and Argon are Google's frontier models, built for deep, long-horizon reasoning. Hydrogen is the speed-focused tier, built for fast everyday work and agentic tasks.
How much does Gemini 4 Hydrogen cost for developers?
Developers pay $1.50 per million input tokens and $7.50 per million output tokens through the Gemini API and AI Studio, flat across the 1 million-token context window.
When will Gemini 4 Hydrogen be available in Google Search?
Google said the rollout started on November 12 and is reaching all Search users globally. The company has not given a date for when it reaches every user.
Google said Hydrogen is rolling out starting today. The company has not given a date for when the rollout reaches all Search users worldwide.
