AI systems out-persuade expert humans
A study with nearly 19,000 conversations shows that AI systems reliably outperform expert humans in persuasion tasks, including professional canvassers and world champion debaters. AI's advantage persisted even after experts were coached with AI tools. The edge came from rapidly deploying large amounts of information. In a real-world test, AI raised nearly 3x more donations for Save the Children than professionals.
[2606.16475] AI systems out-persuade expert humans
[Submitted on 15 Jun 2026]
Title:AI systems out-persuade expert humans
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Abstract:Many societal decisions are settled by contests of persuasion. Conversational AI is a powerful new entrant in these contests, but whether it can out-persuade skilled and highly incentivized humans has remained unclear. Here, in a series of four preregistered experiments (n = 18,978 conversations from 6,923 people), we pitted AI systems against a range of human persuaders, including laypeople, winners of a separately preregistered four-round online persuasion tournament, professional canvassers, and world championship debaters. We found that AI systems were reliably more persuasive than expert humans, even when expert humans chose their issues, researched in advance, underwent hours of live, structured practice, and were incentivized with £1,000 cash bonuses. In a follow-up study, AI's advantage persisted after experts received a coaching tool that let them practice against the AI that beat them, review their performance history, and see what AI would have said at key moments. We found converging evidence that AI's advantage stemmed from rapidly deploying larger quantities of information: after coaching, expert humans could tie an AI constrained to respond at human speeds and with human-length messages. In a final study, we show that AI's advantage extends to consequential real-world behavior: AI was nearly 3x more effective than professional canvassers from a UK fundraising firm at raising real-money donations to Save the Children. Together, these results establish that frontier AI systems out-persuade expert humans in conversation, with significant implications for political communication.
Comments: 16 pages, 4 figures
Subjects:
Computers and Society (cs.CY); Artificial Intelligence (cs.AI)
Cite as: arXiv:2606.16475 [cs.CY]
(or arXiv:2606.16475v1 [cs.CY] for this version)
https://doi.org/10.48550/arXiv.2606.16475
arXiv-issued DOI via DataCite
Submission history
From: Kobi Hackenburg [view email] [v1] Mon, 15 Jun 2026 09:40:28 UTC (143 KB)
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