LLMs cannot "teach you a language". They make for cool demos to show off. They can perhaps be a building block of a proper language learning experience.
Then again, the only languages I actually learned - besides my mother tongue - to the point of being able to do things were English and Latin and both were very much acquired offline. I have plenty of experience with language learning apps and I'm not convinced tech is the solution or even part of the solution.
Then again, the only languages I actually learned - besides my mother tongue - to the point of being able to do things were English and Latin and both were very much acquired offline. I have plenty of experience with language learning apps and I'm not convinced tech is the solution or even part of the solution.