Imagine if they were able to support iMessage.

Bluebubble is the way to go for this.

I've created an iCloud account for my llm. On my Mac, I created another user account, not an admin, just regular. Linked to the iCloud account. Installed Bluebubble.

And now I can chat with my AI via iMessage, via my Apple watch, or my homepods. It works beautifully.