Often, but not always. Most AI detectors were trained mainly on ChatGPT-style text, so unedited ChatGPT writing is the type they are most likely to flag. Results still vary by section, by how much you edited, and by the tool.
Written by Adithyan, a student who builds PaperCheck. Last updated 2 November 2026.
Detectors learn the habits of the text they were trained on: even sentence length, stock transitions and general claims. ChatGPT-style writing has those habits, so it is the pattern detectors know best.
Newer models can write differently from what a detector was trained on, so scores can be low even for fully AI-written text. See does Turnitin detect Claude? and why Turnitin can show 0% on new models.
Often, especially unedited text, but results vary and no tool can promise the exact score.
Yes. Edited and mixed text is harder for any detector to judge.
No. You can check with another detector, but its score is only an estimate.
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PaperCheck is not affiliated with Turnitin, GPTZero, papercheck.in or papercheck.ai. Scores from any detector are estimates, not proof.