Google has released its new Gemini 4 Hydrogen model, which is now the default in AI Mode and Google Antigravity for specific subscribers.
Gemini 4 Hydrogen is designed to provide more helpful answers to complex questions, including those with multiple parts, typos, or highly specific requests, by breaking down inquiries and addressing each component in its responses. This model is a significant upgrade, replacing the previous 3.8 Flash, and is being rolled out widely across Google's ecosystem. It is available immediately in Google Search, the Gemini app, all tiers of Google AI Studio, the Gemini API, Gemini for business, and Google Antigravity for AI Pro and Ultra subscribers. This quick, security-conscious release suggests a faster deployment strategy compared to previous models like Carbon and Argon.