What to do when an AI detector flags you

Substack’s AI detector runs Pangram on posts, Notes and comments over 100 words. Here is how the score works, what the accuracy research shows, how to disable it per post, and what to do if it flags your writing.

Wikipedia has tagged 7,652 pages as suspected AI text in 19 months. Here is every published figure on what it catches, and why its rules refuse to treat AI detectors as evidence.

Every published figure on AI text watermarking, dated and traced to its source paper.

What professional bodies have actually penalised for AI use in licensure and certification exams, what their rules say, and the counts none of them publish.

Every published false positive rate for AI image detectors, labelled with the corpus it was measured on and the sample size, and what that means for artists being flagged.

AI writing can fail in a quiet way. The draft looks organized, the tone sounds confident and the grammar is clean, but one date is wrong, a citation does not exist or a statistic has been lifted from

No public tool can detect Claude’s watermark. We audited 6 checkers ranking on page one – every one looks for the wrong thing. Plus a free browser-local exposure scorer.

Claude watermark removers cannot remove Claude’s watermark. Anthropic says the mark adds no characters to the text, and no public detector exists to verify any removal claim.

Every published false-positive figure measured on professional, non-academic writing — graded by who produced it, plus the widely-quoted numbers that trace back to nothing.

Translated writing does get flagged as AI, but not by Turnitin’s Translated Matching. What the two systems actually do, and what the 2026 data shows.