This is not only not possible to build in any reliable and maintainable way, but "[w]e are the most accurate AI text detector that exists" is an outlandish claim.
It is truly strange to see so many comments on Hacker News -- a message board owned by YCombinator, a startup accelerator whose actual mission is to launch wildly profitable companies -- talking conspiratorially about the wealthy being "parasites", lambasting "capitalism", pointing to increased profits as evidence of unscrupulous behavior.
The comments here are particularly disappointing. Relitigating old Microsoft debates (all the way down to adolescent insults — instead of Micro$oft we have (c)opywrong), blaming Microsoft for global inequality (!), multiple references to AI being “bullshit” because a model didn’t perform up to snuff on a particular task on a particular try.
HN used to (this is a new account, but I am not new to HN) embrace technology, optimism, and the intersection of the two. Now it’s a race to see who can demonstrate their bona fides by sneering enough or affecting enough disillusionment. It’s really disappointing! And yes, I realize I’m not being the change I want to see, but it is so disheartening to see so many grumpy people racing to tear others down.
It's important to note that the author is a well-known effective altruist who firmly believes that AI catastrophe _is_ coming and tweets about this quite a bit. Quite honestly, I find it odd (or perhaps telling) that Vox just provides a platform for EA to report on EA-related topics with only minor disclaimers that the author is, in fact, a well-known EA.