Well, I've tried to get around it for our corporate SEO blogging strategy, and I've found that it's just not possible to do it (even with really crazy techniques where you have different models combined to produce the output, or you change your prompting style massively). The minute I take the same article that the LLM gave me and I rewrite it in my own voice (meaning just take the information and topics, but rewrite it from scratch), the post works immediately and passes as 100% human on Pangram.

The only thing that gets around that is StealthGPT, but it mangles your intent in the output so badly that it's easier to just write the thing yourself.