Superhuman, the AI productivity platform that rebranded from Grammarly, has acquired GPTZero, one of the most widely used AI content detection startups. The deal will fold GPTZero’s detection technology into Superhuman’s product suite, adding an authenticity layer to a platform that also helps people write with AI.
What GPTZero brings to the table
GPTZero was co-founded in 2023 by Edward Tian and Alex Cui. In a relatively short window, the startup amassed over 19 million registered users and crossed $30 million in annual recurring revenue. According to PitchBook data, the company’s valuation exceeds $88 million.
The startup’s toolkit goes beyond simple AI text detection. GPTZero offers hallucination detection, plagiarism checking, and something called AI Vision, which extends detection capabilities beyond text. All of these tools are slated for integration into Superhuman Go, the company’s AI assistant that works across more than one million apps and websites.
As part of the acquisition, GPTZero’s 30 employees and both co-founders will join Superhuman, where they’ll lead the company’s authenticity efforts. Superhuman currently employs around 1,400 people under CEO Shishir Mehrotra. No financial terms of the deal were disclosed.
