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Policy2026-07-22 · source-backed
The tool scans posts, notes, replies, and comments to estimate whether text was machine-written, making Substack the first major newsletter platform to surface detection scores natively to readers rather than using them for internal enforcement (The Verge). The problem is straightforward: detection accuracy on well-edited hybrid human/AI writing is poor, and Substack is putting a probabilistic number in front of readers as if it were a verdict. Every writer using AI for research or editing is about to be graded by a classifier that can't distinguish that from generation. Watch this collide with Codeberg's proposed ban, both attempting enforcement without a reliable detector.
Each link below shares sources, entities, or timing with this story.
Shared entities / Shared topic
Both cover Codeberg, Substack; overlapping topics (attempting, codeberg, comment, detection).
Shared entity: Watch / Shared topic / Earlier coverage
Both cover Watch; overlapping topics (accuracy, detection); earlier Watch coverage from 2026-06-02.
Shared entity: Watch / Earlier coverage / Tension
Both cover Watch; earlier Watch coverage from 2026-07-09; pushes against this story (against).
Both cover Watch; earlier Watch coverage from 2026-06-14; pushes against this story (against).
Shared entity: Substack / Earlier coverage / Tension
Both cover Substack; earlier Substack coverage from 2026-03-05; pushes against this story (vs).
Shared entity: Watch / Earlier coverage
Both cover Watch; earlier Watch coverage from 2026-07-14.
Both cover Watch; earlier Watch coverage from 2026-07-14.
Both cover Watch; earlier Watch coverage from 2026-07-13.