Google Rolls Out Gemini 4 Hydrogen for AI Plus Subscribers

Google Introduces Gemini 4 Hydrogen

Google has begun rolling out Gemini 4 Hydrogen, the successor to the Gemini 3.8 Flash model. This new model serves as the headline offering for the company’s Google AI Plus subscription plan, priced at $4.99 per month.

Access Tiers for Different Users

The rollout creates a clear distinction between subscription tiers. Google AI Plus subscribers gain direct access to Gemini 4 Hydrogen as their primary model. Free users, by contrast, continue to receive the Flash-Lite model by default. They can only access Hydrogen through the platform’s automatic model selection system, which chooses the appropriate model based on the task complexity.

Identifying the Active Model

Users who want to confirm which model generated a response can check the model indicator within the Gemini interface. This transparency helps subscribers verify they are receiving the Hydrogen model they pay for, while free users can see when the system upgrades them automatically.

Positioning in Google’s AI Lineup

Gemini 4 Hydrogen represents the latest step in Google’s rapid model iteration. The shift from a numbered Flash version to a named Hydrogen release suggests a new branding approach for flagship models. The $4.99 price point for AI Plus positions it as an affordable entry to Google’s most capable consumer AI, though the exact capability differences between Hydrogen and Flash-Lite remain detailed in the full product documentation.