File photo: Googleplex in Mountain View, California, August 19, 2014. Photo: Jijithecat / Wikimedia Commons / CC BY-SA 4.0. Cropped and resized. Adapted image: CC BY-SA 4.0.
Google is starting to roll out Gemini 4 Hydrogen, a new artificial intelligence model for Google Search, the Gemini app and business and software-development tools.
In its November 12 announcement, Google described Hydrogen as a faster option for everyday coding and multi-step tasks that use tools. Google positioned Carbon and Argon for harder, long-horizon reasoning, with Hydrogen focused on rapid execution.
The rollout matters beyond people who write software. Google said Hydrogen is becoming available globally in Search for all users, starting today. In the Gemini app, free users will get access through automatic model selection when Google considers it appropriate for a prompt. That does not mean every account receives it immediately or that every free user can manually select it for every question.
In a separate Search announcement, Google said the upgrade would improve how its AI handles complicated questions and connects users with relevant websites. The company also promised more visual responses, including images and comparison tables.
For developers, Google set the model’s API price at $1.50 per million input tokens and $7.50 per million output tokens. Tokens are chunks of text or data used for pricing, not a count of words.
The official model card specifies a combined input-output context window of one million tokens. Its default synchronous output limit is 64,000 tokens, with up to one million output tokens available through background long decode. Those are not separate allowances for one million input tokens plus one million output tokens.
Google is also introducing Orchestrator in its Antigravity development tool. It can switch between models during a work session. Hydrogen access in Antigravity is available to paid Google AI Pro and Ultra subscribers.
Google’s reported speed and performance improvements are company claims, rather than guarantees for every task. The model card says the system can still produce false information and may occasionally be slow or time out.
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