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SUBSTACK ADDS AI DETECTION TO IDENTIFY AI-WRITTEN POSTS

AI DESK1 MIN READ
TUE, JUL 21, 2026

■ AI-SUMMARIZED FROM 2 SOURCES ▸ TIMELINE

Substack is rolling out an AI detection feature powered by Pangram that lets readers identify potentially AI-generated content on the platform. The tool scans posts, notes, replies, and comments to estimate how much text may be AI-written or AI-assisted.

The detector is now available on Substack's web and iOS applications, with Android support coming soon. Readers can analyze individual pieces of content to receive an assessment of potential AI involvement. Pangram, an AI detection company, provides the underlying technology. The feature applies to all user-generated content on the platform, including long-form posts and shorter comments. The move addresses growing concerns about AI-generated content flooding publishing platforms. Substack has become a popular destination for independent writers, making transparency around content origin increasingly important to its user base. The detector provides estimates rather than definitive conclusions, reflecting the current limitations of AI detection technology. Substack users can now make informed decisions about the authenticity of content they encounter on the platform.

■ SOURCES

EngadgetThe Verge

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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