Cleverbot is Artificial Intelligence. Say whatever you like - songs, jokes, memes or anything, and it will respond. It learns what people say, in context, and imitates. Many people keep talking for hours, and say it's too clever to be a bot - that it must be human. Talking Bot is an entertainment - not made to be logical, give advice, or be useful. Yet it never is: it is a bot. Cleverbot is software. Maybe it even contains a little Actual Intelligence.
It's a bot that you can chat to have fun or get your English better. It is a chatterbot web application that uses an artificial intelligence (AI) algorithm to have fake conversations with humans.