Gemini 4 Hydrogen: Google's Fast New AI Model (2026)

By PowerfulAI.tools Editorial Team

Google has added a third model to its Gemini 4 family. Gemini 4 Hydrogen is a faster, cheaper model built for everyday coding and agent-style tasks, and unlike Gemini 4 Carbon, ordinary users can try it straight away.

Google announced Hydrogen on 12 November 2026 and says it is rolling out globally from that day. It is coming to Google Search for all users, the Gemini app, Google AI Studio and several paid Google products.

Image: Google

What launched

Google describes the Gemini 4 line-up like this: Gemini 4 Carbon and Gemini 4 Argon are its frontier models for deep, long-running reasoning, while Hydrogen is meant to bring strong intelligence to everyone, with a focus on speed and efficiency.

Key details from Google's announcement:

• Large context window: Hydrogen can take in up to 1 million tokens (roughly, pieces of words) at once and produce up to 1 million output tokens.
• Four thinking levels: low, medium, high (the default) and a new "xhigh" level. Higher levels spend more effort on a task.
• Working with other models: In Google Antigravity, Google's coding tool, a new Orchestrator feature can switch between models in one session. Google gives the example of Carbon coordinating the work while Hydrogen runs helper and checking agents.

Google's performance claims

Google says Hydrogen scores 51 on the Artificial Analysis Intelligence Index at its default setting, just ahead of Gemini 4 Argon on 50, and 54 at the xhigh setting. It also says Hydrogen finishes tasks about 2.5 times faster than Gemini 3.8 Flash and scores 57% on Terminal-Bench 4.1, a coding test, compared with 18.2% for 3.8 Flash.

Google also reports that Hydrogen makes more than five times fewer fabricated claims than 3.8 Flash. These are Google's own figures, not independent results.

Benchmark results as published by Google. Image: Google

Who can use it and where

This is the part most people will care about. According to Google:

• Google Search: Hydrogen is available globally in Search for all users, across all languages supported by AI Mode. Google calls it "the biggest model upgrade to Search yet".
• Gemini app: Hydrogen can be chosen from the model menu. Free users get it through automatic model selection when it suits the prompt.
• Gemini in Google Sheets: starting with Google AI Pro and Ultra subscribers, plus eligible business plans.
• Google Antigravity: for paid Google AI Pro and Ultra subscribers.
• Developers: all tiers of the Gemini API in Google AI Studio, and Android Studio.
• Businesses: Gemini for business through the API or model menu, Antigravity, and Gemini in Sheets on eligible subscriptions.

Image: Google

What it costs

For everyday users, Hydrogen in Google Search costs nothing extra, and free Gemini app users can get it through automatic model selection. Some features, such as Hydrogen in Google Sheets and Antigravity, need a paid Google AI Pro or Ultra plan.

For developers, Google lists API pricing in US dollars:

• Input: US$1.50 per million tokens
• Output: US$7.50 per million tokens

Google says this price stays the same across the whole 1 million token context window, so long prompts don't cost more per token.

What it means for ordinary users

Most people will meet Hydrogen without choosing it. If you use Google Search, Google says Hydrogen is now available to everyone there, and that its reasoning improves how Search breaks a question into many smaller searches (a technique Google calls query fan-out).

In the Gemini app, free users won't always get Hydrogen, because the app picks a model automatically based on the prompt. If you pay for Google AI Pro or Ultra, you also get it in Google Sheets for help with spreadsheets.

For people who build apps or websites, Hydrogen looks like Google's new everyday workhorse: cheaper than its frontier models, with a large context window and flat pricing. As always, it's worth testing it on your own tasks before relying on Google's benchmark numbers.

How we checked

We checked every claim in this post against Google's own announcements on 13 November 2026:

• Introducing Gemini 4 Hydrogen (Google blog)
• Google Search gets a major upgrade with Gemini 4 Hydrogen (Google blog)

Benchmark figures are as reported by Google. We have not tested the model ourselves. Details we couldn't confirm on Google's official pages have been left out.