Does Copyleaks detect ChatGPT?
Yes
Yes. It is the primary case the product is marketed on.
How it works
Copyleaks runs a text classifier over the document and reports both AI-likelihood and a conventional plagiarism similarity score.
The part people miss
The 99%+ accuracy figure in Copyleaks marketing is vendor-reported and has not been independently reproduced at that level.
Flagged for something you wrote yourself?
There is a right order to handle it in, and editing the document first destroys your best evidence.