How big of a model do you guys think google overview model is?

It's perhaps the model AI model in the world right know, and I just wanted to understand, if you are serving a billion plus requests a day, what size of model could be actually used in the real world?

Edit: I don't expert people from Google to say what it is, but if you could judge from your experience of model intelligence, surely we could come up with a good number, right?

Is it like a 31B model intelligence ? Is it more or less than that, etc