Did you ever get this to work? Running into the same issue. Can call sandbox environment test notifications, but not production. Yes, I know the libraries are marked Beta – but it's still crucial that we make sure Production URLs are working properly.

Thanks for the quick reply! So, I do see the API option but just to clarify: for those of us who already pay for a ChatGPT subscription (plus or Pro in my case), API costs are a totally different pricing model. Whereas the default Xcode ChatGPT option seems to just connect to your actual chat account. But I have no idea which model it's choosing so some indication would be great. But, sounds like maybe there's no plan to allow non-API consumption granularity over model?

Ok got it, thanks! Will do. Generally it's pretty good so far, at least. Someone else had the idea to just ask the model which one it is, and it sounds like 4o. Appreciate the help, and I'll file feedback.

Ah – so, this is perhaps a simulator bug! I ran your code on the Simulator (Xcode 26.0.1 running the iPhone 17 simulator iOS 26) and, did not see what was expected. But, given that this code presumably worked for you I had the thought to try it on device and – works! Thanks!