Google is releasing Gemini 4 Hydrogen, a fast model for coding and AI agents, worldwide for developers, businesses and consumers, including in Google Search, ITdaily reports. It is the third model in the Gemini 4 family. Koray Kavukcuoglu, SVP at Google DeepMind and Chief AI Architect of Google, said the heavier Carbon and Argon models are meant for deep reasoning, while Hydrogen carries out tasks quickly. Hydrogen has a 1 million token context window and costs $1.50 per million input tokens and $7.50 per million output tokens across the full window.
According to Google, users switching from Gemini 3.8 Flash get tasks done 2.5 times faster, and fabricated claims drop by more than a factor of five. Partners in early tests saw Hydrogen run 2 to 2.8 times faster while using 12% to 23% fewer tokens than 3.8 Flash, ITdaily reports. Google also says Hydrogen is more than 2.3 times more resilient against indirect prompt injections on the Gray Swan IPI benchmark.
In Search, Google says Hydrogen should better understand multi-part questions and typos, and deliver more visual answers with a broader range of links. Developers can use it in the Gemini API, Google AI Studio and Android Studio, and businesses through Gemini for business, Google Antigravity and Gemini in Google Sheets. Google is also introducing Orchestrator in Antigravity, which switches between Carbon and Hydrogen within one session.