Superhuman acquires AI detection startup GPTZero

Superhuman, which also has an AI detection tool as part of Grammarly, has snapped up GPTZero.

In 2024, Tian told TechCrunch that it was profitable. Tian and co-founder CTO Alex Cui, who’d been friends since high school, raised a $3.5 million seed round led by Uncork Capital, followed by a $10 million Series A in June 2024 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 formed when Grammarly bought email provider Superhuman last year and rebranded under that name — already had an AI detection tool built into its platform. GPTZero’s mission has been to help humans detect and defend against AI slop. Grammarly’s tool has been designed to help users, often students, determine whether their writing appears AI-generated, then revise it so it doesn’t. As for why Superhuman bought a competitor, Superhuman says that “two AI detectors are better than one.” Last chance to save up to $190 on TechCrunch Founder Summit. Join 1,000+ founders and VCs at all stages for real-world scaling insights and connections that move the needle.Savings end June 26, 11:59 p.m. PT. Every weekday and Sunday, you can get the best of TechCrunch’s coverage. TechCrunch Mobility is your destination for transportation news and insight. Startups are the core of TechCrunch, so get our best coverage delivered weekly. Provides movers and shakers with the info they need to start their day. By submitting your email, you agree to our Terms and Privacy Notice. SpaceX cleared to fly Starship again after booster failure in May Waze adds new AI-powered features and customization updates