Google has introduced Gemini 4 Hydrogen, a model it says is built for speed and everyday coding and agentic workflows, while Carbon and Argon remain the frontier models for deeper, longer reasoning. Hydrogen is priced at $1.50 per million input tokens and $7.50 per million output tokens across a 1 million-token context window, and Google says it is rolling out across Google AI Studio, the Gemini API, the Gemini app, Google Search, and other products.

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