[Google Begins Rolling Out Gemini 4 Argon to Google AI Subscribers] According to Golden Finance, on October 14, Google began rolling out Gemini 4 Argon to Google AI subscribers. Supported platforms include Google Antigravity, the Gemini app, and the AI mode in Google Search. Gemini 4 Argon is being offered at a promotional price of $2 per million input tokens and $10 per million output tokens.