- Study Finds Social Media Posts Are Increasingly Generated by AI
- LinkedIn particularly affected, with 40% of long posts written by AI
- Substack and Twitter/X also hit hard
LinkedIn and other social media networks are rapidly being consumed by AI-written posts, according to a new study.
A report from AI detection firm Pangram Labs found that nearly half of all long posts (250+ words) on LinkedIn were created entirely by AI, with companies like Substack and X/Twitter also seeing a huge increase in this type of content.
“LinkedIn was the most AI-saturated platform, where more than 40% of long-form posts were reported as entirely AI-generated,” the company’s report said.
The study, which also examined Medium and Reddit alongside other social networks for a dataset of more than a million posts, found that one in four long-form posts on social media are reported as entirely AI-generated, with longer content much more likely to be created with AI than in short form.
Pangram found that LinkedIn was the most AI-saturated platform, where over 40% of long-form posts were reported as entirely AI-generated, with Substack being the least affected, with longer posts often much less likely to be AI-generated.
LinkedIn was also identified as having the highest AI share of all platforms included in the report, as although its posts made up only a third of the items analyzed, it accounted for almost two-thirds (62%) of all AI content reported by the system.
However, when including a mix of AI and human content, X/Twitter was the most overwhelmed by AI, with the study finding that almost half of the articles on the site were either entirely AI-generated (23.9%) or AI-assisted/mixed (22.9%), with only 53.2% of X articles reported as entirely human-written.
“Our data shows that AI-generated content is a problem across all platforms, and it hits long-form content particularly hard,” Pangram said.
“Contrary to what one might expect, people are overwhelmingly willing to use AI to speak for themselves in professional contexts associated with their real identity, and are less likely to use it on informal and anonymous platforms.”
“AI writing is now a problem everywhere on social media,” noted Max Spero, CEO and co-founder of Pangram Labs. “An Internet completely flooded with undisclosed AI content is bleak, but we don’t think it’s inevitable.”
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