On November 12, Business Insider reported, citing informed sources and internal Google information, that Google is internally testing a new Gemini model called Hydrogen, with a focus on rapid response and high efficiency. A Google engineer said in an internal message that the model is capable, fast, and efficient, and has been made available to employees for testing through the company's internal development platform Jetski. An employee who has tried the model said its positioning is similar to Google's previous Flash series, emphasizing faster speed and lower cost. Google has previously launched the Gemini4Argon and Carbon models, with Carbon focusing on cybersecurity and multi-step, long-running tasks. The two high-end models are currently available only to paid users. Whether Hydrogen will be offered for free in the future or adopt a paid model remains unclear. The internal testing comes as competition in AI models heats up, with Anthropic also releasing its new-generation Fable and Mythos models this week.