I am waiting for the day (maybe it's already here) when I can talk to an LLM to practice my 2nd language. It can correct everything I say, it can talk forever, it can challenge me to use new grammar or vocabularly. Note: I can speak all day in my 2nd language with friends but I wouldn't give a business presentation nor could I explain, as a native, how something technical works. If I watch a TV show I might understand 30%-99% but the more lawyers/military/goverment/science parts there are the more it's beyond my current level.

Getting exposure there is hard. Talking to friends just means more practice with what I already know but an LLM could help me practice things outside that area.