Some do. Studies have shown that simple, careful English, the kind many non-native writers use, can look like AI to some detectors. That is a real risk for students in India and elsewhere, so we test for it before every model change.
Written by Adithyan, a student who builds PaperCheck. Last updated 22 October 2026.
Many detectors look for text that is very predictable. Writers who use a smaller, careful vocabulary can produce predictable sentences without any AI help, and some detectors mistake that for AI.
Before a model goes live we score human writing that was never used in training: 773 essays by English learners and 171 published papers by authors in non-English-speaking countries. With the live settings, 0 of the 773 essays and 1 of the 171 papers were scored as mostly AI.
Keep your drafts, notes and version history. They are the best evidence that the work is yours. Any detector score, including ours, is an estimate, not proof.
Some have been shown to be. It depends on how the detector was trained and tested.
In our latest test, 0 of 773 learner essays were scored as mostly AI.
Check your paper: 5 free checks a month
PaperCheck is not affiliated with Turnitin, GPTZero or Pangram. Scores from any detector are estimates, not proof.