Google rolls out Gemini 4 Hydrogen with 2.5x speed boost, four reasoning levels

New Delhi Google has rolled out Gemini 4 Hydrogen, a new artificial intelligence model that completes tasks 2.5 times faster than its predecessor, Gemini 3.8 Flash, as the company looks to improve the speed and efficiency of everyday AI tasks, coding and agentic workflows. The model is being made available across Google AI Studio, the Gemini API, Gemini for business, the Gemini app and Google Search.. Paid Google AI Pro and Ultra subscribers can also access it through Google Antigravity, according to the company. In a post on X, Google CEO Sundar Pichai said the model was built for speed and efficiency across everyday tasks, coding and agentic workflows. “Compared to 3.8 Flash, it finishes tasks 2.5x faster. Also has 4 thinking levels, so you only wait and pay for the reasoning depth a task requires,” he said.