Watson beats Jeopardy!'s greatest champions
IBM's DeepQA system parses puns and wordplay without an internet connection
Quick facts
- System
- IBM Watson (DeepQA)
- Lead researcher
- David Ferrucci
- Opponents
- Ken Jennings, Brad Rutter
- Final score
- Watson $77,147 vs Jennings $24,000, Rutter $21,600
What happened
IBM's Watson, a question-answering system built on a room-sized cluster of 90 servers and 2,880 processor cores, competed on Jeopardy! against the show's two most successful all-time champions, Brad Rutter and Ken Jennings, in a televised match broadcast over three episodes in February 2011. Watson's DeepQA software decomposed each clue's wordplay and phrasing, generated multiple candidate answers, then scored each candidate against evidence gathered from a large corpus of text using natural language processing techniques, all without a live internet connection. Watson won decisively, finishing with $77,147 against Jennings' $24,000 and Rutter's $21,600; in his closing answer on the show, Jennings wrote 'I for one welcome our new computer overlords.'
Why it matters
Watson demonstrated that a machine could handle open-domain natural language, including puns, indirect phrasing, and general trivia, a much harder and less structured problem than chess, and it pushed IBM and the wider industry toward commercial natural-language AI products in the years that followed.
How we know
IBM's corporate history page documents the final scores and Jennings' concession quote directly; contemporary Forbes coverage of the broadcast independently confirms the same result and Watson's winning margin.
Sources
- IBM Corporate History. Watson, Jeopardy! champion · Primary source (author-declared)ibm.com · Cited as a "primary" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
- Bruce Upbin, Forbes. IBM's Supercomputer Watson Wins It All With $367 Bet · General sourceforbes.com · Cited as a "news" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
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