The current generation of consoles can’t run them locally, so the developers would have to run the models for the customers. Considering most game developers (including Rockstar) don’t even have dedicated servers for multiplayer, that’s probably too much to ask.
I think Elder Scrolls 6 has a higher chance of implementing it, only because Microsoft owns Bethesda and also has the OpenAI partnership. Microsoft also has a history of supporting game devs doing stuff with Azure.
I’ve dabbled with adding an LLM to OpenMW, and I think there’s potential there. But I also think it could get very expensive. Maybe by the time ES6 comes out, that won’t be the case.