Google begins global rollout of Gemini 4 Hydrogen

Google announced Gemini 4 Hydrogen on November 12, describing it as a fast model for everyday tasks and beginning a global rollout across Search, the Gemini app and developer services. The company says Hydrogen completes tasks 2.5 times faster than Gemini 3.8 Flash at its default high thinking setting. Its performance and speed figures come from Google’s own announcement and have not been independently verified in the reports reviewed.

Hydrogen is positioned as a practical model for routine coding, web research and other multi-step tasks, while Google says Gemini 4 Carbon and Gemini 4 Argon are intended for more demanding reasoning. In Google Search, Hydrogen is the default model for AI Mode and is used for difficult questions in AI Overviews. Google says it is designed to better interpret multipart queries, typos and follow-up questions, and to provide more links and visual responses, including tables and tools.

The model is also rolling out through the Gemini app, Gemini API, Google AI Studio and Google’s business services. Google says it is available in the Gemini app’s automatic model selection for free users when suitable, and to paid Google AI Pro and Ultra subscribers...