---
title: "Substack's New Tool Tells You Who's Been Writing Their Newsletters with AI"
source: "TechCrunch：AI（RSS）"
source_tier: "t2"
url: "https://techcrunch.com/2026/07/22/substacks-new-tool-tells-you-whos-been-writing-their-newsletters-with-ai/"
permalink: "https://feed.astralor.com/items/itm_15ce799930d93a28f0fc3eb3"
published: "2026-07-22T16:23:09.000Z"
score: 79
channel: "ai"
tags: ["AI Detection Tool","Substack","Content Transparency"]
---

# Substack's New Tool Tells You Who's Been Writing Their Newsletters with AI

## AI commentary

> This report deserves attention from all content platform operators and readers. It reveals a trend: AI writing transparency is moving from voluntary disclosure to tool-based verification. For newsletter creators, this is both pressure and opportunity — authentic human voices will be more valued.

## At a glance

Substack has launched a new feature that lets readers estimate how much of a newsletter was written by AI. This move signals a broader shift toward transparency around AI-assisted content and reflects the industry's exploration of disclosure standards for AI writing.

## Key points

- Substack launches an AI content detection tool to help readers gauge AI involvement in newsletters.
- The tool estimates the percentage of AI-generated text by analyzing textual features.
- This move is Substack's latest effort to promote content transparency and may prompt other platforms to follow suit.

## Full text

Substack is giving readers a way to estimate how much of a newsletter was written by AI, signaling a broader shift toward transparency around AI-assisted content.

---

Verify against the original before citing; curated by Astral Feed: https://feed.astralor.com/items/itm_15ce799930d93a28f0fc3eb3