Are there Mac OS so-called Smart Compose (Real-Time Assisted Writing) apps (similar to what gmail offers) that I could use when writing in Scrivener?

I write neither fiction nor business memos.
I have experience with and published on the topic of neural networks. I have seen first hand their ability to learn based on experience and make predictions In this case based on the individual’s writing history and pattern, irrespective of what they are writing about.
Jasper is an example, but the cost is prohibitive