What does Mitusuku mean

Mitsuku's father

Mitsuku has won the Loebner Prize for the most credible chatbot five times. There is no company or research institution behind the chatbot, but a hobby developer.

Usually you have children or you don't have any. In the case of Steve Worswick, this requires a little more explanation. The 50-year-old from Leeds, UK, has flesh and blood children - and a bit and bytes child. The Mitsuku chatbot is Worswick's creation. He developed it. Alone. Over 15 years now. Besides, in the evening hours. Because during the day he looked after servers. Worswick worked as an IT specialist in the public sector until 2018. Then, after 22 years, he resigned and has been the lead AI developer at Pandorabots, a company that produces chatbots.

Worswick's path to the chatbots was not foreseeable. He had once produced dance music to pass the time and even released some CDs in Great Britain. Then he happened to see a chatbot on the website of a producer friend. He found that “really cool”, according to Worswick. Artificial intelligence has always fascinated him, and the TV series “Star Trek” and “Knight Rider” are largely to blame. Worswick began developing a chatbot for his website himself. At some point he realized that the visitors to his site were more likely to talk to this chatbot than to be interested in its music. From then on, he focused on improving the chatbot. A few years later, the British computer game company Mousebreaker approached him with the question of whether he could set up a chatbot for their website. It was Mitsuku's hour of birth. “Some collect stamps, others fish, I like to program chatbots,” says Worswick about his hobby, which it initially remained.

Mitsuku - chatbot with the most human-like conversation

In the meantime, Worswick has won the Loebner Prize five times with Mitsuku - a competition that has been held annually since 1991 and since 2014 under the aegis of the British AISB (The Society for the Study of Artificial Intelligence and Simulation Behavior). In this competition, four judges chat with people and with chatbots without knowing whether the other person is made up of flesh and blood or bits and bytes. The jurors' questions vary in complexity and are intended to help identify the chatbot with the most human-like conversation. Most recently, Mitsuku won four times in a row. Whereby Worswick modestly admits that "after a few questions it usually becomes obvious when a chat partner is a bot". This is also the case with Mitsuku.

Worswick never had that much time to develop Mitsuku over the years. One, sometimes two hours a day, more was actually never possible. "My wife," he wrote in a British AI forum after winning the Loebner Prize for the first time, "still often says that I spend more time with Mitsuku than with her."