Google unveils Gemini 4 Hydrogen, its new AI model built for speed

Google has announced Gemini 4 Hydrogen, its latest AI model. Adapted from Gemini 4 Carbon and focused on speed, Google claims that Hydrogen also surpasses its frontier Gemini 4 Argon model when using its default thinking level.

"While our frontier models, Gemini 4 Carbon and Gemini 4 Argon, excel at deep, long-horizon reasoning on your hardest problems, Hydrogen is built for rapid execution across diverse agentic workflows," wrote Koray Kavukcuoglu, senior vice president at Google DeepMind, in Thursday's announcement. 

Specifically, Hydrogen is intended to quickly conduct tasks such as writing code, running tests, and doing everyday work, as opposed to designing systems and fixing complex bugs. Set to a "high" thinking level by default, Hydrogen can also be adjusted to low, medium, and a new xhigh tier, which vary in quality, latency, and cost.

"Hydrogen is built to stand on its own as a model for everyday work — or to pair with Carbon and Argon as the high-efficiency execution engine in multi-model workflows," wrote Kavukcuoglu.

Gemini 4 Hydrogen is rolling out globally from today, arriving in Google Search for all users. It will also be available for selection in the Gemini app's model dropdown menu.