Google rolls out Gemini 4 Hydrogen: 2.5x faster model in search

Google announced global availability of Gemini 4 Hydrogen, replacing Gemini 3.8 Flash in search, the Gemini app, and developer tools. The new model is 2.5 times faster than its predecessor, better understands complex multi-part queries, and generates more visual responses. Google calls this the biggest model upgrade in its search engine's history.