There are, but at least the ones I’ve tried out ,that allow you to perform a free trial online, have seemingly very poor results detecting GPT-3 based Chat GPT text, and that’s just feeding a direct output as input to the detector, with no spinning or customization at all in between to even try to throw them off their tracks. There are a few additional ones I would have been prone to try, but they required subscription and payment (a no go at this stage).

Were the outputs to eventually have an inbuilt digital watermark, there could be an easier basis to detect AI generated type text, but even so, each company will have used their own method to generate the (potential) watermark, and I’m pretty sure that adding a step or two in the end-user’s pipeline would largely degrade the watermark’s persistence and utility (though that requires some minimal effort on the user’s side, which is not a done deal).