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Superhuman Inc., the company behind Grammarly, has bought GPTZero to add AI-detection and authenticity checks to its Superhuman Go assistant. GPTZero’s tools flag AI-generated text, fake citations and plagiarism, and will now work alongside Superhuman’s own detector across a million apps and sites.
- Superhuman (Grammarly's parent) acquired GPTZero, adding it to Superhuman Go's existing detector to cross-check AI-generated text, fake citations, and plagiarism across a million+ apps and sites.
- GPTZero brings 19 million users and ~$30 million ARR, having raised $13.5 million and been valued above $88 million by PitchBook before the deal.
- The combined two-model approach aims to cut false positives/negatives as AI-generated content now makes up roughly half of all new online articles.