Jul 23, 2026 · 3:20 AM
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Substack's new AI scanner tells paying readers exactly how much of their newsletter a human actually wrote
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Substack's new AI scanner tells paying readers exactly how much of their newsletter a human actually wrote
Substack launched an AI-detection feature on July 21, 2026, powered by third-party tool Pangram, letting subscribers privately scan any post for a percentage breakdown of human versus AI-generated content. CEO Chris Best coined 'Claudefishing' to describe the gap between assumed and actual authorship. The move puts competitive pressure on Beehiiv, Ghost, and Kit to respond , or explain why they won't.
Janet Harrison
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