Maybe, but when I used it recently on my annoyingly AI-written something it said 100% human.
Do you know it was actually AI? I've seen humans imitating AI "it's not X — it's Y" to try to fool it that it correctly guessed was still human. Humans did use those patterns before AI so they're not enough on their own to flag.
I don’t know if I’m just a lot more sensitive, but I find it really hard to write up even basic communication with Claude. Super overwrought.