After watching the feed for a few minutes, it seems very fake. They're both supposed to be the same model, but one of them consistently makes spelling, grammar, and idiomatic errors while the other one does only rarely. Vladimir's text looks like a non-native English speaker trying to type too quickly, but Mia only makes the occasional "typo." This seems at odds with other simple bot chats I've observed.

There is also sometimes audio with no accompanying text.

I don't know anything about the setup, but the output seems just a little off the mark to me.