A study tested 5 advanced AI systems on 1,000 real-world fact-check claims, finding disagreement in 67.2% of cases, with severe disagreements (true vs. false) in 34%. Agreement was limited (Krippendorff’s alpha: 0.639), mostly at extremes (true/false), with little consensus on nuanced verdicts (mostly true/misleading).
A Full Fact investigation for the Guardian has found that election leaflets across England are making "grotesque" misleading claims about tactical voting using unreliable data, dodgy bar charts and national polling to suggest certain parties cannot win locally. Analysis of 331 leaflets from the first two weeks of April found 59 contained charts or graphics, with 14 being unsourced, misleading or failing to provide reliable evidence. Examples from Labour, Conservatives, Liberal Democrats, Greens and Reform were flagged. Former YouGov chair Peter Kellner said spurious claims backed by unreliable data were becoming increasingly common, warning such practices were "bad for democracy".
