"This is a completely updated version of my January 2023 article on AI content detectors. When I first tested these detectors, the best result was 66% correct from one of three available checkers. My next set of tests, in February 2025, used up to 10 checkers -- and three of them had perfect scores. In April, just a couple of months later, five detectors boasted perfect scores."
"Also: The best AI chatbots: I tested ChatGPT, Copilot, and others to find the top tools now But now, about half a year later, the quality has declined. Only three content detectors achieved a perfect score (including one new player). A couple of the content detectors that aced our tested declined in quality, at just about the same time that they also added restrictions on free use."
"Merriam-Webster defines " plagiarize" as "to steal and pass off (the ideas or words of another) as one's own; use (another's production) without crediting the source." This definition fits AI-created content well. While someone using an AI tool like Notion AI or ChatGPT isn't stealing content, if that person doesn't credit the words as coming from an AI and claims them as their own, it still meets the dictionary definition of plagiarism."
Using an AI to do writing without crediting the AI meets Merriam-Webster's definition of plagiarism. Early detector tests in January 2023 achieved a best of 66% accuracy, while tests in February and April 2025 saw multiple tools reach perfect scores. Detector performance declined about half a year later, with only three achieving perfect detection and some services adding free-use restrictions. Chatbots performed as well as or better than many standalone detectors in tests. Detector services show mixed accuracy and reliability. Chatbots may eliminate the need for separate detectors in some cases.
Read at ZDNET
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