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Definition: Loebner Prize

A Turing test contest to find the most humanlike chatbot. Launched in 1991 by Hugh Gene Loebner and the Cambridge Centre for Behavioural Studies in the U.K., starting in 2014, the contest has been hosted by the Society for the Study of Artificial Intelligence and Simulation of Behaviour (AISB), where Alan Turing worked as a code breaker in World War II.

The competition will end when judges believe responses are from a human after interacting with the system via text, speech and images. As of the September 2018 contest, the judges were not fooled, and it appears there is a long way to go. Steve Worswick's Mitsuku chatbot won the top spot in the September 2018 contest with a score of 33 out of 100, giving Worswick his fourth bronze medal. See Turing test.