Google has launched Gemini 4 Hydrogen — not Gemini 4 Flash, not Argon, not Pro, and it’s live today in the Gemini app, Search AI Mode, and Google Antigravity for paying subscribers. The model replaces Flash as Google’s new everyday workhorse, with free users getting it automatically when the system judges it’s the right fit for their prompt.
Paid AI Pro and Ultra subscribers get full manual access in Antigravity, including a new “Extra” thinking tier and Orchestrator, a feature that lets Carbon delegate routine steps to Hydrogen mid-task, cutting token use without sacrificing output quality. It’s not a phone. Not a chip. Not hardware.
This is pure AI infrastructure, and it’s rolling out globally, right now. Hydrogen handles up to 1 million tokens in and 1 million out natively, double the context window of last year’s flagship models. On the Artificial Analysis Intelligence Index, it scores 51 at default High thinking (vs Argon’s 50), and hits 54 at its top xhigh setting.
Google says it’s faster and more precise: better at preserving tone and formatting in email drafts or study guides, more reliable at picking the right Connected App or skill, and sharper at parsing messy, multi-part, typo-ridden queries in Search. In AI Overviews, it’s now the default for “your hardest questions.” Pricing is developer-facing only: $1.50 per million input tokens, $7.50 per million output tokens.
No consumer subscription bump, Hydrogen arrives inside existing Gemini Free, Pro, and Ultra tiers. There is no standalone “Gemini 4 Hydrogen” app, no device launch, no India-specific rollout date, no Rs price. It’s a backend upgrade, invisible to most, but active in every search, every chat, every Antigravity session starting Thursday.
What changes for you? If you use Gemini Free, you’ll notice smoother document rewrites and fewer follow-up prompts. If you pay for AI Pro or Ultra, you now have an extra thinking tier and Orchestrator, tools built for complex, multi-agent workflows. If you’re building on Gemini APIs, your token bills just got more granular.
And if you searched “Gemini 4 hydrogen” today? You found it.
ADFiled by The AI Desk
Models, assistants and the companies and chips behind them, reported from what was released and what was claimed, with the difference kept clear.
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