After 'Carbon', Google launches new AI model 'Hydrogen'

Google has launched Gemini 4 Hydrogen, an AI model designed for rapid execution of everyday coding and agentic tasks. The model features four thinking levels, including low, medium, high and a new xhigh tier. The launch comes days after Google launched Gemini 4 Carbon, its strongest model with frontier performance in cybersecurity and long-horizon agentic workflows.