Given that Sal has never turned Khan Academy into a commercial product -- despite its resounding success and popularity, and the large amount of $$$ he could ha

Given that Sal has never turned Khan Academy into a commercial product -- despite its resounding success and popularity, and the large amount of $$$ he could have made -- has proven he's not in this for the money. So I expect the AI version to also be free or at least have a free version for parents (and schools who can't afford it).