Comment by spoork

The problem with such things is that you would need 100% accuracy in most cases for it to be useful. For example many schools and universities fear that students use ChatGPT for homework. If such a plagiarism checker has false positive results in just a small percentage of cases, the consequences for honest students would be too severe to actually act on the results of the check. But perfect accuracy can never be reached for text classification, so those tool will never be that useful despite being interesting to AI people.