How does it work?

This website uses AI to call you on your phone. You are not talking to a real person. Pretty crazy, right?

Is this a real product?

At this point in time this is just a prototype. Let's see how it goes.

Are there some downsides to practicing languages this way?

Every different way of practicing languages has its own pros and cons. Since this is just an experimental prototype, you might notice that sometimes the AI has trouble hearing what you said or depending on what language you speak it might have an accent. Also the call durations are currently limited to a couple of minutes, making it not ideal for long practice.