Google Launches Gemini 4 Hydrogen AI Model for Search and Developers

Google has launched Gemini 4 Hydrogen, a new AI model designed for rapid execution across diverse agentic workflows. The model is available globally across developer, enterprise, and consumer surfaces, including Google AI Studio, the Gemini API, Gemini for business, the Gemini app, Google Search, and paid Google AI Pro and Ultra subscribers in Google Antigravity.

Pricing and Performance

Gemini 4 Hydrogen is priced flat across its entire 1 million-token context window at $1.50 per million input tokens and $7.50 per million output tokens. According to Google, Hydrogen surpasses Argon on the Artificial Analysis Intelligence Index at its default high thinking level (51 vs. 50, and reaching 54 at its highest xhigh thinking setting), while often completing tasks faster than models in its class.

Developer and Enterprise Workflows

Hydrogen is positioned as a standalone upgrade for teams migrating from Gemini 3.8 Flash. Google states it finishes tasks 2.5 times faster at its high default setting while more than tripling Terminal-Bench 4.1 scores (57% vs. 18.2%), cutting fabricated claims by more than 5x, and adapting cleanly when a tool call fails or a search returns empty.

The model ranks #5 on Agent Arena, arena.ai’s live benchmark. For deep domain reasoning and analysis, it leads its class on HLE-Diamond (58.8%), ranks #1 overall on Vals Tax Agent Bench (52.3%), ties for #1 on the Vals Legal Research Bench (55.8%), and leads its class on AutomationBench-AA.

Search and Consumer Features

Hydrogen is significantly upgrading Search, delivering more helpful, intuitive responses for all users globally. According to Google, Search will better understand user intent, provide more visual responses, and connect users to a wider range of relevant links through an upgraded query fan-out technique.

In the Gemini app, Hydrogen is better at following guidance, calling the right tools, and getting users to a reliable output with less back-and-forth.

Safety

Google states that Hydrogen reduces overreach in agentic tasks by up to 81% and under-service by up to 79%, and cuts misaligned actions and task shortcutting across tool-use and coding evaluations by 12x. It achieves a 96.7% honesty rate on Google’s internal agent honesty evaluation.

Why it matters

• Gemini 4 Hydrogen is now available globally across Google’s developer, enterprise, and consumer products.
• The model is priced at $1.50 per million input tokens and $7.50 per million output tokens across a 1 million-token context window.
• Google says Hydrogen outperforms Argon on the Artificial Analysis Intelligence Index and improves Search responses for all users globally.

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Sources

• blog.google: Introducing Gemini 4 Hydrogen for Agentic Workflows
• nokiapoweruser.com: Google Gemini 4 Teased by Logan Kilpatrick: Hydrogen & Krypton Leaks - NPowerUser

This article was drafted with AI assistance and checked against the sources above. Company claims are reported as claims. Cover image is AI-generated.