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GPTZero data finds 42% of LinkedIn posts judged AI-generated

June 23, 2026 at 17:16 EDT

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Measurements by AI-detection firm GPTZero found that roughly 42% of LinkedIn posts were judged to be AI-generated, while Reddit sat below 10%. Superhuman CEO Shishir Mehrotra cited the company's data.

June 23, 2026 · AI Authenticity

LinkedIn Now Reads Like a Machine — Reddit Still Sounds Human

An analysis by content detector GPTZero found roughly 42% of LinkedIn posts are mostly AI-generated, while Reddit stays below 10%. As "AI slop" spreads, the scarcity value of authentic human voices is rising fast.

14.4%

of the internet today judged AI-generated

429K

AI texts found in ~2.98M scanned

96.5%

claimed accuracy on mixed documents

Share of Posts Judged AI-Generated, by Platform

Taller column = more machine-written content.

39.5%

22.3%

Medium

16.8%

Substack

9.0%

4.8%

LinkedIn leads by more than 8× over Reddit — projected to near 100% AI-generated by ~2031.

Reddit — Valued as Human

Low AI share seen as preserving genuine, human-like discussion. As slop spreads, "authentic voices" gain scarcity value.

LinkedIn — Trust Erosion

Users complain of "template posts" and "AIs talking to each other." High detection scores can undermine credibility.

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