Substack launches AI detection tools amid creator anxiety

Substack has introduced AI detection capabilities for its creators, partnering with startup Pangram to help users identify machine-generated content on the platform. The newsletter company is also considering features that would let readers filter AI-generated posts from their feeds.

The move comes as Substack CEO Chris Best acknowledged concerns about "AI slop" overwhelming the internet, though he emphasized the company isn't opposed to AI use broadly. Best noted that Substack itself uses AI for software development, research, and product features including clipping and translation tools.

Why it matters

Substack's positioning reveals a strategic bet that meaningful segments of creators and readers will pay a premium for human-generated content — even as AI becomes ubiquitous elsewhere. The company's willingness to build anti-AI features suggests it sees differentiation value in catering to users anxious about generative AI, particularly as major platforms embrace the technology without reservation.

The anxiety is real

Best's announcement invoked LinkedIn as a cautionary example — a platform he suggested Substack wants to avoid resembling. The comparison is notable given that LinkedIn itself announced anti-AI slop measures earlier this year, according to Business Insider.

The broader pattern extends beyond digital platforms. Opposition to data center construction has intensified, and film studio A24 faced backlash from fans after partnering with Google's DeepMind AI lab.

Business Insider's Peter Kafka, who first reported these details, argues the tech industry shouldn't be surprised by consumer pushback. He notes that after years of messaging that AI would fundamentally reshape work and society — combined with many tech leaders' alignment with polarizing political figures — widespread anxiety was predictable.

A labeling future

Kafka suggests the most likely outcome is a labeling regime similar to organic food certification. Most consumers will encounter AI regularly without much thought, while certain brands and audiences will pay premiums for "AI-free" products and content.

This segmentation could vary by context — users might accept AI in professional networking but reject it in music streaming or creative writing platforms. Substack appears to be positioning itself for the latter category, betting that human authorship will remain a valued attribute for its core audience of newsletter writers and subscribers.

The company's nuanced stance — using AI internally while offering detection tools to users — reflects the complexity of navigating consumer sentiment around generative AI. As Best wrote, some Substack users are "human-writing maximalists" while others publicly experiment with AI tools.

The details were first reported by Business Insider.