Substack partners with Pangram to add AI-generated content detection

The newsletter platform is bringing in Pangram's detection technology to help identify AI-written posts.

Key points

Substack is partnering with Pangram to add an AI detection feature.
The feature aims to help identify AI-generated content on the newsletter platform.
Details on rollout timing, user-facing labels, and appeals processes are not yet specified.

Launch facts

Availability:: Not specified in available sources
Platforms:: Substack

1 source 0 web 55% confidence

Source highlights

EngadgetPrimarySubstack is adding an AI detection feature—80%

Full story and ongoing updatesRead full story

Story brief

The newsletter platform is bringing in Pangram's detection technology to help identify AI-written posts.

Who should care

DevelopersMonitor Substack's developer and API communications for any detection metadata or labeling endpoints that could be integrated into third-party publishing tools.

If Substack exposes detection signals via API, developers building editorial workflows or content tools will want to incorporate them early.

FoundersReview your startup's AI-content disclosure policies before publishing on Substack or similar platforms, and prepare for a world where detection labels are standard.

Platforms are moving toward transparency norms; founders who publish AI-assisted content should get ahead of labeling expectations.

PMsAudit your product's content moderation and labeling roadmap to assess whether AI-detection integration is a near-term requirement.

Substack's move signals that AI-content detection is becoming a table-stakes platform feature, not a niche add-on.

What changed

2026-07-21Engadget reports Substack is partnering with Pangram to add an AI detection feature.