Hydrogen, Argon or Carbon? Which Gemini 4 model to use, what it costs, and where Hydrogen loses

The companion to the video on Gemini 4 Hydrogen (November 12, 2026). INSIDE THE PDF: the one-page picker for Hydrogen, Argon and Carbon; API prices per million tokens, including the Argon price change after November 30; which Gemini plan gets which model; Google’s benchmark table vs Claude Sonnet 5.5 and GPT-6.1 Terra, with where Hydrogen wins and where it loses; when to use each thinking level; the two-model Orchestrator setup; and three copy-paste prompts to test it today. Built from Google’s launch posts. Independent guide from Hyperautomation Labs, not affiliated with Google.

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