"...the detector examines 20 features of writing style, including variation in sentence lengths, and the frequency of certain words and punctuation marks, to determine whether an academic scientist or ChatGPT wrote a piece of text."<p>You could use a simple text-difficulty feature of many word processors to get similar stats. Not very sophisticated.<p>I expect the 'AI Wars' will get hotter (AI used to detect/defeat AI) but for now, pretty lukewarm.