GPTZero
#3 in AI Detection & Authenticitygptzero · seit 2023-01-03 · 20× · zuletzt 03. Juli 2026
GPTZero is a cloud-based AI detection tool that uses a deep-learning model (currently Model 3.7b / 3.15b) to determine whether text was generated by large language models such as ChatGPT, GPT-5, Claude, Gemini, or Llama. Detection operates at sentence, paragraph, and document level; a dedicated API endpoint enables integration into third-party systems. Founded on January 3, 2023 by Edward Tian and Alex Cui, GPTZero was acquired by Superhuman (formerly Grammarly) in June 2026 but continues to operate as a standalone product. With more than 10 million users and 100+ institutional partners across education, publishing, HR, and legal sectors, it is one of the most widely used AI detectors in the English-speaking education market.
Features
| Deployment (Self-Hosted/Cloud) | Cloud/SaaS only (hosted by GPTZero/Superhuman); no self-hosting documented |
| License | Proprietary / SaaS (freemium + paid subscriptions); no open-source component publicly documented |
| Platform | Web app (gptzero.me), Chrome extension (Origin), Google Docs add-on, API; LMS integration with Canvas, Google Classroom, Moodle; Zapier integration |
| Release Date | Initial release: January 3, 2023; Model 3.7b: August/September 2025; Model 3.15b: December 18, 2025 |
