Luis Von Ahn23:36
Yeah, thanks Nathan for the question. So yes, one thing that is exciting about, you know, we've been working honestly for years to try to have the top nine languages have content all the way to Duolingo Score 129, which we now have it internally. You know, I kept on going around like, 'Oh, we're almost done. We're almost done.' And somebody said something that stuck with me a lot said, 'No, no, no. That's just the beginning.' Because when we finally have all this content and now we do we really are in a much better spot to be able to make this content significantly get better based on how the users are performing. So we're starting really to do that and yes we have seen that changes in content certainly changes in content quality but also in the type of contents that you show have interesting impacts on retention particularly new user retention. So we are doing a lot of experiments to see for example just what we teach you in the first unit matters a lot, you know do we teach you greetings that is one thing do we teach you just the words for mom and dad that's another possibility and you know it actually is not as simple as it's always better to teach you greetings it's not as simple as that it's a little more complicated than that but generally these things do have an impact in retention and so we're very excited about that and you know we're also likely going to move to something where we have all this content. This is awesome, but we may even start generating content just for you. Based on everything that we know about you, we may just be able to generate content just for you. Maybe not the immediate next exercise, but like two exercises from now based on everything we've just generated that sentence just for you or that piece of content. So, we really are getting to that point and that's very exciting. In terms of other subjects, each subject has its unique challenges and unique things. So for sure AI is helping us be able to add new subjects faster and chess is a great example. I mean, we were able to add chess in about 9 months. But each subject has its own types of contents that you need to add. So, for example, adding math was relatively easy.
If what you're trying to do is add math in the way that ChatGPT would show it, which is a wall of text. But if you want to add math with diagrams and user interaction, etc., that is harder. AI is definitely making it easier, but it's still a lot harder. You're not just querying an AI to just give you some content. It's a lot harder to do it with all the diagrams. So I guess my answer to that is yes, it is making it easier to add more subjects. It is not yet trivial to add new subjects. At the moment, we're pretty happy with the subjects that we have, particularly we're very excited about math. You saw we started this call with a video for math. We really finally got to the point where our math course really has pretty much all the content between grades 2 and 12, and it can actually explain things when you get things wrong. So we're very excited about that.