AI tools produce statistics with total confidence and zero shame. A growth percentage with no base size, an "average price" with no sample, a policy claim from a blog that summarized another blog — paste any of these into an article, a pitch, or a business decision and the error becomes yours. This prompt turns your AI into its own toughest auditor. Feed it any claim, paragraph, or research result an AI produced, and it methodically traces each number back to its source, grades the source quality, checks the sample size and time period, applies a base-rate test to dramatic percentages, separates what the source actually says from what the AI added, and returns a verdict for every claim: verified, distorted, unsourced, or contradicted. It was developed during a real project after an AI researcher returned impressive market numbers — +268.6% growth, average prices, platform rules — and every single one had to be checked before money was committed to a strategy. Some survived. Some did not. That checking process is this prompt. You get the full copy-paste prompt, the skepticism checklist it applies, and a filled example showing a real claim being taken apart. For writers, researchers, founders, students, and anyone who has ever almost published an AI's confident mistake.

What you get

- The complete copy-and-paste AI-output fact-check prompt

- Source tracing, source grading, sample checks, and base-rate tests

- A clear verdict system: verified, distorted, unsourced, or contradicted

- A filled example showing real claims being audited