ChatGPT’s market share is slipping as Google and rivals close the gap, app tracker data shows

OpenAI’s ChatGPT early lead among individual users appears to be shortening as rivals like Google’s Gemini close in on its app and web market share—a shift that could complicate the company’s reported plans to IPO later this year.

OpenAI’s ChatGPT app market share fell from 69.1% in January 2025 to 45.3% in 2026, according to data from mobile intelligence data provider Apptopia, first reported by Big Technology. Over the same period, Apptopia data shows Google’s Gemini chatbot app increasing...