I'm stunned by how well this works for Japanese, the only language I think I'm good enough at to judge the AI's responses.
The speech recognition is flawless as far as I can tell. The AI occasionally gets itself into a loop of repeating my question or itself, but I think this has been a problem with a lot of chatbots. The only glaring errors I've seen so far are these kinds of AI-specific issues, like forgetting context, getting geographical facts wrong, etc.
>こんにちは。今日はどちらへお出かけですか？ (Hello. Where are you headed?)
京都に行きます. (I'm going to Kyoto)
>素晴らしい都市ですね。行ったことはありますか？ (It's a great city. Have you been?)
いや初めてです。お勧めの場所はありますか？. (Nope, it's my first time. Any places you suggest?)
>京都は歴史のある美しい都市です。たくさんのお寺や神社を訪れることができます。(Kyoto is a beautiful city with history. You can visit plenty of temples and shrines.)
そうですね。清水寺とか聞いたことがある。行きたいんだ. (True. I've heard of like, Kiyomizudera, and I want to go.)
>清水寺は必見です！とても人気のあるお寺で、市内を一望できるんですよ(Kiyomizudera is a must-see! It's a very popular temple, and you can see the whole area at once)
Not only does it know about Kyoto, but it knows about a specific temple (picked it up via speech recognition too). Translations are rough and by me, not quazel.
This could be a real game changer if the other languages are this good.
Additionally, if you register an account then you get access to the "Scene builder" which lets you set up a situation to start the conversation in. I have found that you can redirect any conversation to pretty much anything, but I thought it was a cool idea that many people here averse to account-making might have missed.