I don’t think there’s a reliable system or API for doing so, unclear that arms race will ever favor the side of the detectors.

As far as how I / other people do it, there are some obvious styles that reek of LLMs, I think it’s chatgpt.

There’s a very common structure of “nice post, the X to Y is real. miscellaneous praise — blah blah blah. Also curious about how you asjkldfljaksd?"

From today:

This comment is almost certainly AI-generated: https://news.ycombinator.com/item?id=47658796

And I'm suspicious of this one too - https://news.ycombinator.com/item?id=47660070 - reads just a bit too glazebot-9000 to believe it's written by a person.

Thanks a lot for the detailed answer, will take a look at the examples