It launched in November 2022, created a category almost overnight, and held a majority of global AI assistant market share every single month that followed. For over three years, it held a majority of global AI assistant market share. Reaching a billion users and losing your majority at the same time is not a contradiction. Sensor Tower put Gemini at 27.7% of the global app market, with 662 million monthly users. By the end of May 2026 it stood at 46.4%, with Gemini at 27.7% and Claude at 10.3%, according to Sensor Tower’s State of AI 2026.