ChatGPT app hits 1 billion monthly active users in record time, data shows 03.06.2026

OpenAI's ChatGPT has achieved a historic milestone by crossing one billion global monthly active app users in May, making it the fastest app to reach this benchmark. This achievement comes amidst intense competition in the artificial intelligence sector, particularly between OpenAI and its rival Anthropic. While ChatGPT's growth has been significant, data from Sensor Tower indicates that Anthropic's Claude app has shown more rapid year-over-year growth, boasting 56 million global monthly active app users in the second quarter to date with a 640% increase compared to ChatGPT's 62%. Both OpenAI and Anthropic are reportedly preparing for initial public offerings.

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