- Study finds social media posts are increasingly AI-generated
- LinkedIn particularly affected, with 40% of long-form posts written by AI
- Substack and Twitter/X also badly hit
Recent research indicates that social media networks are rapidly becoming dominated by AI‑generated posts.
A report by AI detection company Pangram Labs shows that nearly half of LinkedIn’s long‑form posts (over 250 words) are wholly produced by artificial intelligence, while Substack and X (formerly Twitter) also report substantial growth in AI‑generated material.
“LinkedIn was the most AI‑saturated platform, with more than 40% of its long‑form posts flagged as completely AI‑generated,” the report stated.
Analyzing more than one million posts across Medium, Reddit and several other networks, the research discovered that roughly one‑quarter of all long‑form social media content is flagged as fully AI‑generated, and longer pieces are far more likely to be AI‑produced than brief updates.
Pangram confirmed that LinkedIn leads in AI saturation, with over 40% of its long‑form posts classified as fully AI‑generated, while Substack shows comparatively lower AI involvement, as its longer posts are rarely AI‑generated.
Although LinkedIn accounted for only about one‑third of the scanned items, it represented nearly two‑thirds of all AI‑flagged content, highlighting its outsized role.
When including both fully AI‑generated and AI‑assisted articles, X (formerly Twitter) shows the highest overall AI presence, with nearly half of its content either fully AI‑written (23.9%) or AI‑assisted (22.9%), while only 53.2% of X articles are identified as authored entirely by humans.
“Pangram emphasized that AI‑generated material is a pervasive issue across all platforms and disproportionately affects longer content.”
“Surprisingly, users are widely inclined to employ AI to represent them in professional contexts tied to their real identities, while they are less inclined to rely on AI on casual or anonymous platforms.”
Max Spero, CEO and co‑founder of Pangram Labs, noted that AI writing has become a widespread problem on every social network. He warned that an internet saturated with undisclosed AI content would be bleak, though he remains optimistic that it is not inevitable.
