A friend started a AI to improve writing (https://outwrite.com https://outwrite.com) and when the initially started, they had a detect plagiarism feature that t

A friend started a AI to improve writing (https://outwrite.com https://outwrite.com) and when the initially started, they had a detect plagiarism feature that teachers could use, I think they stopped developing that eventually. If I recall correctly, the way it worked was to build up a model of this persons writing, and how it compared to to other people, and then would measure the likelihood that sentences and paragraphs matched the rest of the writing. I suspect something similar could be done with GPT-x