Google officially released Gemini 4 Argon on October 13, 2026, making it broadly available to developers, enterprises, and consumers worldwide through the Gemini API, AI Studio, and the Gemini app for Google AI Pro and Ultra subscribers. The model is Google's first major frontier release since Gemini 3 in late 2025, and follows Google's decision to skip the previously promised Gemini 3.5 Pro.