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IBM Project Debater

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  • Artificial Intelligence You Can Trust

    Director of IBM Research Dario Gil discusses the importance of transparency in AI.

  • Opening Arguments Cut // Debater & Harish

    IBM’s Project Debater and world-class debate champion Harish Natarajan present their opening arguments for and against the motion, “We Should Subsidize Preschool.”

  • Debating with Project Debater

    Harish Natarajan tells Intelligence Squared U.S. host John Donvan what it was like to debate an AI system.

  • The Promise Of AI

    Ranit Aharonov, manager of the Project Debater team at IBM Research, discusses the promise of AI and humans working together in the future.

  • How Does She Do It?

    How does Project Debater work? Noam Slonim, the principal investigator of Project Debater at IBM Research, explains.

  • Rebuttal Round Cut // Debater & Harish

    Project Debater and Harish Natarajan offer rebuttal remarks in round two of their debate on the motion, “We Should Subsidize Preschool.”

Debate Details

At Intelligence Squared U.S., we’ve debated AI before – the risks, the rewards, and whether it can change the world – but for the first time, we’re debating with AI. 


In partnership with IBM, Intelligence Squared U.S. is hosting a unique debate between a world-class champion debater and an AI system. IBM Project Debater is the first AI system designed to debate humans on complex topics using a combination of pioneering research developed by IBM researchers, including: data-driven speechwriting and delivery, listening comprehension, and modeling human dilemmas.


First debuted in a small closed-door event in June 2018, Project Debater will now face its toughest opponent yet in front of its largest-ever audience, with our own John Donvan in the moderator’s seat. The topic will not be revealed to Project Debater and the champion human debater until shortly before the debate begins. 

The Debaters

For the motion

Project Debater

IBM Project Debater

IBM’s Project Debater is the first-ever AI system designed to meaningfully engage with humans in a debate. First created in 2012 in IBM... Read More

Against the motion

Harish Natarajan

Harish Natarajan

Debate Champion & Head of Economic Risk, AKE International

Harish Natarajan, a widely recognized debate champion, was a grand finalist at the 2016 World Debating Championships and winner of the European... Read More

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