Substack adds an AI detector to help spot blogs written by no one

Explain Like I'm Normal

Substack is rolling out an internal AI detection tool to flag posts, notes, and comments that appear to be generated by LLMs. The move aims to maintain platform authenticity as low-effort ‘slop’ begins to flood subscription-based writing ecosystems. While detection is notoriously unreliable, the integration signals a major shift toward verifying human provenance in high-stakes creative niches.