Google Launches Gemini 4 Hydrogen for Faster Search
Google swaps the Flash name for Hydrogen and claims big gains in quick thinking for everyday AI tasks.

TL;DR
- Gemini 4 Hydrogen runs tasks 2.5 times faster than Gemini 3.8 Flash.
- It scores higher than Gemini 4 Argon on the Artificial Analysis Intelligence Index.
- The model is now default in AI Mode and rolling out to all Search users.
Google just rolled out Gemini 4 Hydrogen, its new fast model aimed at handling complex queries without always needing the heaviest firepower.
The company says Hydrogen runs tasks 2.5 times faster than the prior Gemini 3.8 Flash while still scoring higher than Gemini 4 Argon on the Artificial Analysis Intelligence Index at default settings. It hits 51 on that benchmark normally and 54 at the new xhigh thinking level.
Search gets sharper
In Google Search, Hydrogen improves how the system reads messy or multi-part questions, including typos and very specific requests. It breaks prompts into subqueries to surface more relevant links and adds more images, tables, and structured visuals in AI Mode responses.
The model also powers better tool use and follows instructions more closely, which helps it deliver complete answers across languages in AI Overviews.
Where it shows up
Hydrogen is now the default in AI Mode and available across Google’s AI Studio, the Gemini API, the Gemini app, and paid tiers of the Antigravity platform. Free Gemini app users get it through automatic model selection when it fits the prompt.
Developers pay $1.50 per million input tokens and $7.50 per million output tokens. It supports up to 1 million tokens in and out.
Thinking levels and team-ups
- Four tiers: low, medium, high (default), and extra-high (xhigh).
- Orchestrator in Antigravity lets stronger models like Carbon hand off routine steps to Hydrogen to save tokens while keeping quality.
Google says the update is already rolling out to every Search user worldwide.
The Tea
Google is betting that not every job needs the biggest model. By shipping a quicker, cheaper option that still punches above its weight on benchmarks, the company is pushing practical speed over raw size. That could matter more for daily use than another frontier leap.
Sources
- TechCrunch: Google’s latest Search upgrade promises better answers to your most complicated questions
- 9to5Mac: Google announces Gemini 4 Hydrogen with ‘significant leaps’ in speed, intelligence
- 9to5Google: Google announces Gemini 4 Hydrogen with ‘significant leaps’ in speed, intelligence
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