Holy shit. I grew up in Armenia when I was 8 and been in the US for 22 years, and by all accounts English is my primary language, and this got it spot on, with 84% confidence. Was not expecting that for such a unknown accent.
I am guessing this was not trained on a dataset of people speaking English in various accents, but rather is directly detecting your native language.
I am guessing this was not trained on a dataset of people speaking English in various accents, but rather is directly detecting your native language.