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Tools & Demos

Substack adds AI-writing detection via Pangram

What's this about?

Substack integrated detection startup Pangram so readers can scan any post, reply, or comment and get an estimate of how much was written by a human versus with AI assistance.

What exactly is an "AI detector"?

A classifier trained to spot the statistical fingerprints of machine text — telltale word-choice patterns and rhythm. They're probabilistic, not proof: false positives happen (especially for non-native writers), and paraphrasing tools weaken them. Treat the output as a hint, not a verdict.

What's the community saying?

1.4k likes on the announcement
  1. This is the first major *reader-facing* deployment — detection as a platform trust feature rather than a teacher's plagiarism tool.
  2. Writers worry about false accusations damaging reputations, given detectors' known error rates.
  3. Ethan Mollick's wry note — "glad I have always written my own posts" — captures the retroactive-audit anxiety: a decade of archives just became scannable.
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