Superhuman acquires AI detection startup GPTZero

Superhuman, the two companies, has acquired GPTZero, a three-year-old AI detection startup that was first created by Princeton graduate Edward Tian as a senior thesis project. Announce Tuesday.

Terms of the deal were not disclosed, though Tian said Business Insider GPTZero has amassed over 19 million registered users and $30 million in annual recurring revenue.

In 2024, Tian told TechCrunch that it was profitable. Tian and co-founder CTO Alex Cui, who has been a friend since high school, raised a $3.5 million seed funding round led by Uncork Capital, followed by $10 million Series A in June 2024 and is led by Footwork co-founder Nikhil Basu Trivedi, with several other notable investors including Reach Capital, Jack Altman’s Alt Capital and Neo. All told, the company raised just $13.5 million.

Superhuman — The company was founded when Grammarly was founded Bought an email provider Superhuman last year and rebranded under that name – it already had an AI-powered detection tool built into its platform. GPTZero’s mission is to help humans detect and defend against the decline of artificial intelligence. Grammarly’s tool aims to help users, often students, determine whether their writing looks like it was generated by artificial intelligence, and then revise it so it doesn’t. As for why Superhuman bought a competitor, Superhuman He says That “two AI detectors are better than one.”