A new analysis has put hard numbers on something many social media users have long suspected: AI-generated content has quietly taken over the long-form corners of the internet. According to detection firm Pangram, one in four social media posts longer than 250 words is now AI-generated — a figure that raises serious questions about what’s actually being read, shared, and trusted online.
Key takeaways
One in four social media posts over 250 words is AI-generated, according to Pangram’s analysis of over one million posts between April and June 2026.
LinkedIn has the highest AI content rate at 41% of long-form posts, and accounts for nearly two-thirds of all detected AI content despite making up only one third of posts scanned.
On X/Twitter, close to half of long-form articles are AI-generated or AI-assisted.
Substack has the lowest long-form AI rate at around 10%, while Reddit replies are 98% human-written.
Pangram’s detection model reports a false positive rate of
We współpracy z: https://en.cryptonomist.ch/2026/07/12/ai-content-prevalence-social-media/
