Loebner Prize Contest 2003 'Can machines think?' - Alan Turing, 1950

Loebner Prize Contest 2003

The result: The winning entry on Saturday 18 October 2003 was Jabberwock, authored by Juergen Pirner of Hamburg. Juergen receives the Bronze Medal and a cheque for $2,000.

Full results table

Chat to the online version of Jabberwock

Photographs of the contest

Full transcripts of all the judges' conversations are available for downloading as a zip file (163,607 bytes).
Download transcripts

The 2003 Loebner Prize Contest was held at the University of Surrey, Guildford, UK on Saturday 18 October 2003. It was hosted by the Digital World Research Centre, with technical assistance from Maybot Ltd, under the aegis of the Cambridge Center for Behavioral Studies, Massachusetts, USA.

The Loebner Prize Contest is the first formal Turing Test of artificial intelligence. It carries a Grand Prize of $100,000 and a gold medal for the first computer program whose conversation is indistinguishable from a human's. Although this achievement may be some way off, the "most human" program each year wins a prize of $2,000 and a bronze medal.


Quote Patrick Dowling

Professor Patrick Dowling, Vice-Chancellor of the University of Surrey, said:

"We are honoured and delighted to host this fascinating event, which focuses on the interaction between people and digital technology. It reflects the University's commitment to world class interdisciplinary research that will ultimately find important commercial applications."


Entry details for the 2003 contest.


The following organisations kindly supported the 2003 Loebner Prize Contest by donations of funds or equipment:

UniSdirect logo

UniSdirect co-ordinates promotion and support for University of Surrey-based research and enterprise, including the protection and commercialisation of Intellectual Property generated at the University. It also has responsibility for the provision and promotion of University expertise to small and medium sized enterprises.
UniSdirect website

Interwoven logo

Interwoven is a leading provider of enterprise content management. The Interwoven 5 Platform has been used at more than 1,100 global enterprises, including British Airways, Cisco Systems, General Electric, General Motors, and Philips to power their eBusiness initiatives.
Interwoven website


The 2003 Loebner Prize Contest is affiliated with the following organisations:

BCS-HCI logo

The Human-Computer Interaction Group of the British Computer Society provides a forum for all working or interested in the field of HCI and usability. The Group's central concern is to improve usability and the effectiveness of any computer-based technology.
British HCI Group website


The British Computer Society's Specialist Group on Artificial Intelligence provides support to developers and users of artificial intelligence technology of all kinds. Among its other activities, the group runs an annual competition for Progress Towards Machine Intelligence.
SGAI website

The Event

The 2003 Loebner Prize Contest was part of a one day event.

On the morning of Saturday 18 October there was a colloquium, Bots Mean Business, which introduced the local business community to the capabilities and benefits of chatterbots and related technology.

In the afternoon of Saturday 18 October, the Loebner Prize Contest itself was held.


In 1950, Alan Turing, the brilliant British mathematician and code-breaker, asked, "Can computers think, and if so, how would we know?". The Loebner Prize Contest addresses this question by comparing computers with humans. A panel of judges hold conversations by typing at terminals, each of which is connected either to a program or to a real person. The judges rate their conversational partners for "humanness", and the highest ranked computer system wins.

The Loebner Prize Contest has taken place annually since 1991, and this year attracted over twenty entries from all around the world.


The Digital World Research Centre investigates the relationships between people, society and digital technologies. The Centre has undertaken multidisciplinary research for organisations such as the BBC, the EU, Fujitsu, Orange and Vodafone.

Maybot Ltd provides interactive software personalities that engage customers in one-to-one conversations using everyday language. Maybot Characters can be used as communication and marketing tools on websites.

The Cambridge Center for Behavioral Studies, based in Concord, Massachusetts, helps people find effective solutions to behavioural problems. It seeks to bridge the gap between the research community and society by sponsoring activities that disseminate and interpret behavioural research findings for the benefit of those whose problems involve human behaviour.

Dr Hugh Loebner is a New York philanthropist and donor of the prizes. By training he is a sociologist with interests in methodology and mathematical sociology.