ChatGPT becomes fastest app to hit 1B global MAUs, Claude's MAUs up 640% YoY

Summary

ChatGPT has reached 1 billion global monthly active users, the fastest app to achieve this milestone, according to Sensor Tower. Claude's MAUs have increased by 640% YoY to 56M.

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Sensor Tower: ChatGPT becomes the fastest app by far to hit 1B global MAUs; ChatGPT's MAUs are up 62% YoY in Q2 to date and Claude's MAUs are up 640% YoY to 56M

6/3/2026, 9:45:35 AM

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