Pretty different--obviously a lot less consistent today, but capable of a lot more diverse kinds of behavior. As the models get bigger, they'll be easier to prompt, and you could imagine a game designer writing a long prompt for different kinds of NPCs. (E.g. GPT-3 was pretty difficult to get to do a particular thing, although it was very general, but over the years the instruction tuning has gotten a lot better and now it's very easy to ask questions to ChatGPT)