Google releases Gemini 4 Hydrogen, a fast model for agentic work that it is also putting into Search

Google has released Gemini 4 Hydrogen, a faster and cheaper member of the Gemini 4 family built for everyday coding and agentic workflows. Google describes its frontier models, Gemini 4 Carbon and Gemini 4 Argon, as built for deep, long-horizon reasoning, and Hydrogen as built for quick execution across many kinds of tasks. According to Google, Hydrogen completes tasks 2.5 times faster than Gemini 3.8 Flash, its previous fast model. At its default high thinking level, it also beats Argon on the Artificial Analysis Intelligence Index. The model is available in all tiers of Google AI Studio, the Gemini API, Gemini for business, the Gemini app and Google Search. Paid Google AI Pro and Ultra subscribers can also use it in Google Antigravity. Google's Robby Stein calls it the biggest model upgrade to Search yet. Google says Hydrogen better understands multi-part questions, hard-to-read typos and very specific requests, offers more helpful links and visual responses, and gives better answers across the languages AI Mode supports. The release reflects Google's view that many tasks need a fast, reasonably capable model rather than its most powerful one.