GPTZero

What GPTZero is

GPTZero is one of the most widely used detectors. It estimates whether text was generated by a model using statistical features such as perplexity and burstiness, highlighting individual sentences so a reviewer can see which parts drove the result.

What you can do with it

• Check a document for AI signals
• See sentence-level annotations
• Upload files or paste text
• Review results before acting
• Keep a record of the check

Who it is for

• Teachers and institutions
• Publishers and editors
• Recruiters reviewing written submissions

What to watch out for

• Detectors built on perplexity and burstiness misclassify smooth, formulaic or non-native human writing, and lightly edited AI text often passes; research and classroom experience both show this repeatedly
• A score is never sufficient evidence of misconduct: use drafts, version history and a conversation
• Bulk screening of students shifts the default posture to suspicion, which harms trust and learning
• Submitted text is processed externally, so sensitive or unpublished material should stay out