Study Reveals Linkedin Leads in Ai-generated Longform Content

WHO:

Techmeme - Pangram Labs conducted the study.

Fast Company - LinkedIn is identified as the platform with the highest rate of AI-generated content.

WHAT:

Techmeme - Approximately 25% of longform posts with 250+ words across social media were fully AI-generated.

Techmeme - On LinkedIn, the figure for fully AI-generated longform posts was 41%.

Fast Company - More than 40% of LinkedIn posts longer than 250 words were flagged as fully written by AI.

Fast Company - LinkedIn accounted for nearly two-thirds of all AI content flagged in the study.

Fast Company - On X, a quarter of long-form content was fully written by AI, with an additional 23% being AI-assisted.

Fast Company - More than one-fifth of Substack posts were flagged as AI-generated or AI-assisted.

Fast Company - Top-level LinkedIn posts were 1.35 times more likely to be AI-generated than comments.

WHERE:

Fast Company - The study analyzed posts across various platforms, including LinkedIn, X, Medium, Reddit, and Substack.

WHEN:

Techmeme - The analysis covered social media posts from April 24 to June 30.

Fast Company - The study was based on data collected over the course of two months.

WHY:

Fast Company - The rise in AI-generated content is attributed to the ease of using AI tools, such as LinkedIn's built-in “Enhance post” button.

HOW:

Fast Company - Pangram used its AI detection model, which has a 0.01% false positive rate, to scan nearly one million posts.

Fast Company - Users of Pangram's Chrome extension opted into sharing their browsing results for the analysis.

(UPDATED July 11, 2026 06:40 UTC)

A recent study by Pangram Labs reveals that LinkedIn has the highest rate of AI-generated content, with 41% of longform posts over 250 words identified as fully written by AI. The analysis, which examined nearly one million posts across platforms like LinkedIn, X, Medium, Reddit, and Substack from April 24 to June 30, found that about 25% of longform posts on social media were entirely AI-generated, and LinkedIn accounted for nearly two-thirds of all flagged AI content. The rise in AI-generated material is largely attributed to the accessibility of AI tools, such as LinkedIn's "Enhance post" feature, and Pangram's AI detection model boasts a remarkable 0.01% false positive rate.