[BalinKing]

I ran into that issue too w/ sentence-based flashcards, where I almost immediately memorize the sentence itself and the whole thing becomes self-defeating. Similarly, I thought to use LLMs to generate fresh sentences on-the-fly, but the output was never reliable enough for my use-case... e.g. I came across some grammatical construction that the LLMs refused to use correctly. But, this probably depends on the language in question, since it sounds like you had success with it! Maybe I should try again at some point, now that the consumer models are a lot beefier than they were even six months ago.

[potro]

I used it for practice Spanish. LLMs have no issues with generating decent sentences in it. Also as I practiced vocabulary building, I didn't need specific grammar constructs or even to be very sensitive to the occasional mistakes in this area (which I don't remember to notice).

It took me quite a bit of iterations to get AI to generate output I found good enough and with acceptable errors rate for my practice but that was the part of fun.

If anybody wants to try the same route, the biggest mistake not to repeat is to trust LLMs to generate words definitions by them itself. It does it quite well, but still gives wrong definitions from time to time (~1% in my case for the OpenAI models 2 years ago). This wasn't acceptable to me and took a lot of effort to review and correct cards I already had. Feed vocabulary article with word definition to LLM instead if you want it to generate word definitions suitable to your level instead.