I tried it out personally before coming back and typing this out. I wanted to check it for myself, and maaaaaan is mitsuku good!!! The responses are super fast, almost light speed..and completely meaningful. not just something random. I tried her out for a good 5 minutes and am really impressed at how fast she replies, how relevant to the conversation she stayed.
The previous buzz that an AI chatbot got was the googlebot, and it completely sucked. I hope mitsuku really blows over the roof coz she is really good!