If you are not familiar with the fascinating story behind it, I recommend this podcast episode [1], it's one of my absolute favorites (along with its sequel)! I found out about it on this very forum a few years ago, hope to propagate the favor to somebody else out there.
I haven't tried it, but I saw people generating VBA script code with ChatGPT that can be then input into PowerPoint macro editor to automatically generate also the layout. I would be surprised if it made reasonable design choices though, and I expect you are still better off generating content and layout in two consequent steps.
[1] https://darknetdiaries.com/episode/45/