[applesan]

I watched the video, but I don't think this is practical. You can't realistically learn Japanese with gpt 3.5 as it makes ton of mistakes, gpt 4 is better, but still wouldn't use it. Even in this video it doesn't explain meaning of word 動産, but instead only breaks it down to kanji. Also you made mistake in your answer, you don't say おほしい and gpt didn't even correct it.

[iraldir]

I've rewrote the "grammar prompt" for the helper tool on the right since the video and it does behave much better now. Although, as you say, you're limited by what 3.5 can do.

But for GPT not correcting me, it's "a feature not a bug"©. Specifically, he's supposed to act like a Japanese person and if he can understand what I'm saying, even if the conjugation is wrong etc. it should work with it. However if I speak in complete giberish or english etc., then you have a "game over" where you fail the scenario.

It's supposed to be a "japan simulator" so to speak, and in real life, people make effort to understand you, you can use gestures also, even write stuff on paper if necessary.

However I'm currently adding a "validate your answer" button where he should tell you if it's grammatically correct etc. and allow you to take it back.

Ultimately, it's not going to be perfect, especially not with 3.5, but at my level of Japanese I think it's more about forcing me to be creative when I speak, in scenarios that matter to me. Not just following a script from Genki, but needing to explain stuff specific to my situation etc.