Google DeepMind · Agentic Coding Model

Gemini 4 Hydrogen

Google DeepMind has released Gemini 4 Hydrogen, a fast execution model for everyday coding and agentic workflows, alongside the frontier Carbon and Argon models. It scores 51 on the Artificial Analysis Intelligence Index at its default high thinking level (54 at xhigh), above Argon's 50, and reaches 57% on Terminal-Bench 4.1 versus 18.2% for Gemini 3.8 Flash. Pricing is $1.50 per million input tokens and $7.50 per million output tokens across a 1 million-token context window. It is available in Google AI Studio, the Gemini API, the Gemini app, Search and, for paid Pro and Ultra subscribers, Google Antigravity, which also gains an Orchestrator for switching between models within a session.