I guess the question is less about what kind of model is viable and more about what kind of application fits any given model. I'm highly skeptical that my employer is willing to pay long-term costs of close to double what I make an hour for token usage, high precision or otherwise. I'm also highly skeptical of the return in some cases. I have to put my codebases in straitjackets tighter than ever to keep them on the rails, and this requires yet more tokens to do so. For premium work, okay, maybe? But it doesn't always excel at that work. For typical work, I don't see it being worth it for the big models.