Google tests faster Gemini 4 Hydrogen model internally

Google is internally testing a new AI model called Hydrogen, designed for speed and efficiency as part of its Gemini 4 lineup, according to Business Insider. The model follows the launch of Gemini 4 Argon and Carbon, with Carbon being Google's most capable model to date. A Google engineer told staff Hydrogen is "very capable, fast and efficient," and employees accessed it via the internal Jetski platform. Hydrogen reportedly functions similarly to Google's Flash models, which are workhorse tools built to operate faster and at lower cost than models like Argon. The testing suggests a potential future public release.