# Substack tool reveals which newsletters are AI-written

Substack has introduced a new feature that allows readers to see if a newsletter was written using artificial intelligence. This tool aims to increase transparency and trust between writers and their audience, though it may also spark debate about the labeling of AI-assisted content.

**Importance:** 2/5

## Sources

### Technology
- [TechCrunch](https://techcrunch.com/2026/07/22/substacks-new-tool-tells-you-whos-been-writing-their-newsletters-with-ai/) — Wed, 22 Jul 2026 16:23:09 +0000