While Google’s frontier models, Gemini 4 Carbon and Gemini 4 Argon, are best at deep reasoning for hard problems, Hydrogen is designed for fast execution across a variety of agentic workflows, or tasks in which an AI carries out multiple steps on its own, the company explained in an announcement. The idea behind the model’s release is that using the most powerful model isn’t always needed — sometimes a faster, cheaper, and reasonably smart one will do. Goo