Key Takeaways
- 41% of long-form LinkedIn posts are likely written by artificial intelligence.
- AI content on LinkedIn accounts for 62% of all flagged material among five platforms.
- One in four long social media posts may be generated by AI.
According to new research from AI detection company Pangram Labs, LinkedIn has emerged as the most AI-saturated major social media platform. The study found that around 41% of long-form LinkedIn posts were likely written entirely by artificial intelligence.
Pangram collected data through its AI detection Chrome extension, analyzing 1,002,627 posts from LinkedIn, X, Reddit, Medium and Substack. The tool only scanned posts containing more than 50 words, with LinkedIn posts representing roughly one-third of the material analyzed but accounting for 62% of all content flagged as AI-generated.
The problem extends beyond LinkedIn; across all five platforms, Pangram flagged 13.8% of scanned content as fully AI-generated. However, this rate increased sharply for longer posts, with around 25.72% of all posts containing more than 250 words classified as entirely AI-written. X also recorded a high rate of AI-written content, with 23.9% of long-form articles flagged as fully AI-generated.
Substack performed better in terms of AI content rates but still saw 21.9% of its scanned posts flagged as either AI-generated or AI-assisted. Reddit had one of the lowest combined AI rates at 4.4%, attributed to a larger volume of human-written replies.
Pangram's findings were surprising because LinkedIn users typically publish under their real names and professional identities, yet they appeared more willing to let AI speak on their behalf than on more casual or anonymous platforms. A main LinkedIn post was found to be 1.35 times more likely to be AI-generated than a comment, though the difference partly reflected post length.
LinkedIn has acknowledged the growing amount of low-quality AI content and is developing systems to reduce the reach of generic posts, automated comments, and repetitive material. However, the platform does not oppose every use of artificial intelligence, stating that members can use it for various purposes including generating ideas or automating administrative tasks.
The study highlights a significant shift in social media usage patterns, where AI-generated content is becoming increasingly prevalent. As platforms continue to grapple with this issue, users and businesses may need to adapt their strategies to ensure the authenticity and quality of their online presence.
