Google launches Gemini 4 Hydrogen AI model for all Search users globally

Google has released Gemini 4 Hydrogen, the third model in its Gemini 4 family, into Google Search for all users worldwide as of 12 November 2026. The rollout covers developer, enterprise, and consumer products globally, though Google named no specific countries or regional dates.

Hydrogen replaces Gemini 3.8 Flash as the newest model available in Search. Previously, only Google AI Ultra subscribers could access the latest Gemini 4 model, Carbon. Hydrogen is now available to everyone, including non-subscribers.

“our daily driver for agentic workflows”

Google describes Hydrogen as its daily driver for agentic workflows and says it is built for rapid execution across diverse tasks. Carbon and Argon remain the flagship models for deep, long-horizon reasoning on the hardest problems.

Search gains four capabilities with the update: handling harder multi-part questions, showing more links through an upgraded query fan-out, providing more visuals such as images and comparison tables, and delivering better answers in other languages.

Developers can use Hydrogen now in Google AI Studio, the Gemini API, and Android Studio on the paid tier. API pricing is set at 1.50 US dollars per million input tokens and 7.50 US dollars per million output tokens.

In independent Artificial Analysis Intelligence testing, Hydrogen scored 51 points in the standard configuration and 54 at maximum reasoning, compared with 50 for Gemini 4 Argon. It also reduced hallucinations more than fivefold versus Gemini 3.8 Flash and is 2.3 times more resistant to prompt injection attacks.