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Applied AI·June 3, 2026·1 min read

Sensor Tower: ChatGPT has become the fastest app to hit 1B global MAUs by far; ChatGPT's MAUs are up 62% YoY in Q2 to date, Claude's MAUs are up 640% YoY to 56M (Harshita Mary Varghese/Reuters)

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1B MAUs for ChatGPT and 640% YoY growth for Claude mean the assistant layer is no longer a niche tool — it’s a consumer platform with real distribution gravity. If your product strategy assumes users will start in your app, update it — they’re starting in an AI interface and pulling you in via plugins and APIs, or not at all.