I've been working for a few years now as a private tutor teaching proof-based math to adults. Maybe this should give me an incentive to join in on some of the cynical replies this has gotten, but that's not actually how I find myself feeling. I love teaching, especially in the one-on-one format, but it really doesn't scale; not everyone can afford a human tutor and there probably aren't nearly enough of them to meet the possible demand.

If a product like this worked well --- and I agree Andrew Ng's involvement seems like a positive sign --- then that would be great! Something I would wonder about from my past experience using LLM's for technical subjects is how to replicate a particular side of the student-teacher relationship. Sometimes a new student of mine will need to be told that they don't actually understand something as well as they think they do, and that they'd be better served by going more slowly than they might have wanted to. This "talking you down gently" conversation is one I'm happy to have (and sometimes it's actually me who's wrong!) but I'd be interested to see whether and how well an LLM run by a company that really wants to retain customers could pull this off.

It's hard to say without an actual product, of course. I'm looking forward to seeing what they come out with.