The Substack platform has launched a new tool to identify the use of neural networks in content by integrating Pangram technology. This innovation will allow readers to assess the degree of AI involvement in posts, comments, and replies exceeding 100 characters, providing a new level of transparency in author-driven newsletters.

What Happened
Substack has implemented an AI content detection system that analyzes texts (posts, comments, replies) longer than 100 characters. To ensure transparency, authors are provided with draft pre-scanning functions and the ability to manually label the use of AI in their materials.
Context
This initiative is an attempt by the platform to create standards for labeling AI content in the media environment, similar to measures taken by TikTok and YouTube. It is part of a global movement toward verifying content provenance and protecting the authorial environment from the uncontrolled spread of automated text.
Why It Matters for the Industry
For the industry, this is a significant step in the fight against "AI slop" (useless AI-generated content) and the establishment of industry transparency standards. The project sets a precedent for automated authorship verification in niche media and may stimulate demand for specialized AI detection APIs, such as Pangram, for integration into third-party platforms.
Why It Matters for Users
Readers gain a tool to distinguish deep analytics and original research from automated text, which increases trust in high-quality newsletters. This forms a new UX pattern for the visual indication of neural network involvement, helping users better navigate the information flow.
What Is Not Yet Known / Limitations
There is an ongoing technical debate regarding the reliability of AI detection and the dependence on the quality of the Pangram model, which creates risks of false positives.
Sources
Author
Look at AI, Editorial Team
