A human hand reaches toward a wall of identical, glowing, faceless profile pictures.
Hour of Humans Count me

Dead internet theory says most of what you read online is no longer written by people.

Is it true? Let's check.

Ten short comments from online discussions. Some were written by people before 2019, before AI could write. The rest were written by AI this year. Pick which is which.

About this test

Human comments are real posts from a public tech forum, picked at random from 2010–2018. AI comments were written by GPT-5.4, GPT-5.4 mini and Claude Sonnet 4.6, each asked to reply in the same thread in the same casual tone. Both sides use the same punctuation, so quotes and dashes don't give anything away.

We store totals only: how often each comment was guessed right. Nothing about you.