Substack’s new tool tells you who’s been writing their newsletters with AI

3 weeks ago 32

9:23 AM PDT · July 22, 2026

Substack has launched a caller diagnostic that tin amusement you which of your favourite newsletters are being written utilizing AI.

This week, the newsletter and penning level announced an integration with the AI penning detection bundle Pangram that volition let users to scan posts, comments, and replies connected Substack’s app to spot an estimation of however overmuch of the contented was written by a quality and however overmuch was AI.

In the abbreviated term, the determination mightiness beryllium atrocious for Substack’s business, arsenic it could exposure galore of the newsletters connected its level that aren’t wholly written by people. That could perchance erode spot successful the platform’s ecosystem of autarkic quality and blogs, oregon adjacent harm its estimation arsenic a big of high-quality content.

But successful the agelong term, AI detection features could assistance support Substack escaped of “AI slop,” and promote much users to spot what they’re speechmaking was written by a person, oregon astatine slightest amended recognize erstwhile it’s not.

Image Credits:Substack

Substack joins respective platforms that are leaning towards labeling AI content arsenic such, particularly present that AI is playing a greater relation successful the instauration process. Photos and videos generated with AI are labeled arsenic such connected societal media sites, portion music streaming services person much precocious begun labeling and, successful immoderate cases, penalizing AI-generated music.

“This is bully usage of AI,” Substack CEO Chris Best said.

“When I utilized to transportation Substack to writers, 1 mode I would bash it is […] we’ll bash everything for you but the hard part,” helium explained successful an online chat with Pangram’s founder, Max Spero. “You person to person thing — an thought that’s worthy reading, that’s worthy caring about, that’s worthy sharing. That 1 happening is precise hard and precise invaluable […] bundle should bash everything else, but I deliberation you bash privation the idiosyncratic to bash the hard part.”

The diagnostic volition beryllium disposable successful Substack’s app for immoderate post, note, reply, oregon remark supra 100 characters. Substack volition besides let its writers to see an optional AI Author’s note, utilizing which creators tin decently disclose their usage of AI, the institution told TechCrunch.

The institution clarified that the instrumentality is not meant to prohibit oregon penalize AI-assisted writing, but alternatively to promote writers to adhd a “how I marque this” statement, wherever they explicate their process.

Publishers tin besides tally Pangram connected their ain drafts earlier publication, and study and region scans connected their ain enactment they judge are mistakes.

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Sarah has worked arsenic a newsman for TechCrunch since August 2011. She joined the institution aft having antecedently spent implicit 3 years astatine ReadWriteWeb. Prior to her enactment arsenic a reporter, Sarah worked successful I.T. crossed a fig of industries, including banking, retail and software.

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