I haven't really noticed any grammatical or spelling errors.
And if that was a problem, if you also train it using a spelling/grammar checker of the type we've had for decades, it's probably going to be an insignificant amount compared to some non-native writers.
And if that was a problem, if you also train it using a spelling/grammar checker of the type we've had for decades, it's probably going to be an insignificant amount compared to some non-native writers.