Google’s Robby Stein says Gemini 4 Hydrogen is ‘the biggest model upgrade to Search yet.’
Google’s Robby Stein says Gemini 4 Hydrogen is ‘the biggest model upgrade to Search yet.’
by Stevie BonifieldNov 12, 2026, 9:55 PM UTCIllustration: The VergeStevie Bonifield is a news writer covering all things consumer tech. Stevie started out at Laptop Mag writing news and reviews on hardware, gaming, and AI.Google says its new Gemini 4 Hydrogen model can give more helpful answers to complex questions, including “questions with multiple parts, hard-to-understand typos, or highly specific requests.” The new model can break down your questions and address each part in its responses. It’s available starting today in search, the Gemini app, all tiers of Google AI Studio, the Gemini API, Gemini for business, and in Google Antigravity for Google AI Pro and Ultra subscribers. Robby Stein, VP of product at Google Search, says it’s “now the new default model in AI Mode & being used for your hardest questions in AI Overviews.”
