Gemini 4 Hydrogen

About Gemini 4 Hydrogen

Google's lower-cost Gemini 4 model for everyday coding and agent workflows, announced 12 November 2026 and available to everyone from day one: in the Gemini API and Google AI Studio (including the free tier), in Google Search, and in the free Gemini app through automatic model selection. Unlike Argon and Carbon there is no introductory price: $1.50 input / $7.50 output per million tokens across the full 1M-token context, cached input $0.075; thinking tokens are billed as output. Google says it scores 51 on the Artificial Analysis Intelligence Index at its default thinking level, slightly above Gemini 4 Argon's 50, and 54 with the new xhigh thinking level; vendor-reported. Prices checked 13 November 2026. Not listed on the Arena text leaderboard as of 27 October 2026.

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