ai-detector
(3)
Copyleaks
Copyleaks is a New York-based content authenticity company that uses AI to detect plagiarism, AI-generated text, source code, and increasingly images and video. Founded in 2015 by Alon Yamin and Yehonatan Bitton, it serves educational institutions, publishers, and enterprises that need to verify whether content is original, licensed, or machine-generated, and it claims over 99% accuracy across 30+ languages with integrations into major learning management systems.
GPTZero
GPTZero is a New York-based AI startup that builds tools to detect AI-generated text and verify human authorship. Launched in January 2023 by Princeton senior Edward Tian, it grew from a viral side project into a profitable company serving over 10 million users and 100+ organizations across education, hiring, publishing, and legal. Its mission is to restore trust and transparency to writing on the internet as large language models flood it with machine-made text.
Edward Tian
Edward Tian is the co-founder and CEO of GPTZero, the AI-detection tool he wrote in three days at a cafe over the 2023 New Year holiday while a senior at Princeton. Within days, tens of thousands of teachers swarmed the app and crashed its server. Two years on, GPTZero has raised $13.5 million, reached millions of users, turned profitable, and become a default check for educators, recruiters, and grant agencies trying to tell human writing from machine writing.