I hadn't come across GPTZero before and wondered if it worked. Just testing on a sample of my blog posts (I do one each year) I got a 100% AI generated mark for a post in... 2022, and 2023. Both before AI tools were around.
Not to say this post isn't AI generated but you might want a better tool (if one exists)
Not to say this post isn't AI generated but you might want a better tool (if one exists)