Substack has introduced an AI detection tool that helps readers identify content that may have been written by AI or with significant AI assistance. The tool scans posts, notes, replies, and comments to estimate the proportion of text likely generated or heavily influenced by AI systems.

This capability addresses growing reader concerns about authenticity and originality on content platforms. By making AI usage more transparent, Substack acknowledges that disclosure of AI involvement is becoming important for audience trust, particularly on a platform built on personal writing and direct creator-reader relationships.

What This Means for Your Business

If you publish content on Substack or other platforms, be aware that AI detection will increasingly become standard. Readers may view heavily AI-generated content skeptically, particularly on platforms where personal voice matters. If you use AI as a writing assistant, consider being transparent about it to maintain audience trust. For brand publishers and content strategists, this signals that audiences increasingly expect to know when AI was involved in content creation—pure AI generation without disclosure may damage credibility.