Event Brief
Substack adds AI detector to estimate AI-written text
Filed: Jul 21, 2026 at 4:04 PM ET
Summary: Substack is adding a tool that scans posts and estimates how much text may be AI-generated or AI-assisted.
WHO: Substack
WHAT: Substack adds an AI detector tool to scan posts, notes, replies, and comments and estimate AI-generated text.
WHEN: Jul 21, 2026 at 3:22 PM ET
WHERE: Location not specified
WHY: Substack is introducing the new AI detector tool to help users determine whether content may have been written with AI assistance.
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