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Substack brings Pangram AI scans to posts, Notes and comments

Chris Best is betting that reader-triggered Pangram scores and creator disclosures can preserve authorship without banning AI-assisted writing.

By Ryan Merket · Published Jul 22nd, 2026, 10:43pm CT

Primary source: TechCrunch

Why it matters

Substack earns money when readers trust individual writers enough to pay. AI provenance is becoming part of that transaction, and Substack is testing disclosure before enforcement.

An exploded-view technical diagram deconstructing the elements of a digital newsletter page under AI scrutiny. (exploded-view technical diagram)

Substack CEO Chris Best launched a reader-triggered AI detector on July 21st, giving users a way to estimate how much of a post, note, comment, or reply was written by a person or with artificial intelligence.…

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