AI

AI, Startup

Superhuman Acquires AI Detection Startup GPTZero

Superhuman—rebranded from Grammarly’s email app—acquired AI detection startup GPTZero on June 23, 2026, citing “two AI detectors are better than one.” GPTZero, built from Edward Tian’s roughly three-year-old Princeton thesis, had 19M+ registered users and $30M in annual recurring revenue; financial terms were undisclosed.

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