Writing can be flagged as AI even if it was written by a human, mainly because detectors are looking for statistical patterns, as opposed to understanding intent. Use our reliable source checker and AI reference finder to quickly find sources from text, essays, or research papers. A simple way for students, educators, and researchers to provide citations and evidence for their work. GPTZero is the most advanced AI detector for ChatGPT, GPT-4, Gemini. Check up to 50000 characters for AI plagiarism in seconds. GPTZero Add-in Sign In GPTZero ist der vertrauenswürdigste KI-Detektor im Bildungsbereich, sowohl für Lehrer als auch für Schüler, die GPTZero nutzen, um sich mit den Themen akademische Integrität und Schreibverbesserung auseinanderzusetzen. Origin Extension How to get and use our chrome extension GPTZero Tops Accuracy on Chicago Booth Benchmark in 2026 GPTZero outperforms other AI detectors like Pangram on Chicago Booth Benchmark, achieving ~99% accuracy and industry-leading recall for AI detection. GPTZero est le meilleur outil de détection d'IA pour les enseignants et les éducateurs. Independently audited — SOC 2 Type II compliant, with regular penetration testing and continuous monitoring. Compliant with FERPA, GDPR, and CCPA — student writing stays protected, and personal data is deleted on request. GPTZero is the first and leading AI detector that allows you to identify specific content in a document or text that has been generated by a large language model (LLM), such as ChatGPT. Founded in January 2023, GPTZero has served over 10 million users to date and works with 100+ organizations in education, hiring, publishing, legal and more. To update your credit card or billing information, please go to and click on the 'further billing.