Ailyre

Model release · Google

Gemini 4 Hydrogen is out in the Gemini app, the API, Antigravity and Cursor

Released
Review updated

A new Google model for fast coding, multimodal synthesis and everyday work. Google says it finishes tasks 2.5x faster than Gemini 3.8 Flash and scores 51 on the Artificial Analysis Intelligence Index, ahead of Gemini 4 Argon's 50, and 54 at its highest setting, plus 57% on Terminal-Bench 4.1. Cursor reports 54.3% on CursorBench at default effort, up from 39.6% for 3.8 Flash.

Availability

Rolling out in the Gemini API (Google AI Studio and Android Studio), Gemini for business and Google Antigravity for paid Google AI Pro, Ultra and enterprise customers. Everyone can reach it in Google Search and the Gemini app model menu, where free users get it through auto model selection when it fits the prompt. Cursor lists it at $1.50 per million input tokens and $7.50 per million output tokens.

Source trace

Reviewed by Ailyre. Source evidence is presented separately from our summary.

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