Curious how many posts were written by AI, so I ran a small experiment on reddit

Lately I’ve been wondering how much of Reddit’s content is created using AI.

You see a lot of polished, strangely neutral posts these days, some sound too coherent, some used a lot of AI-style words. So I decided to check.

I ran a small experiment using Zhuque AI, a detector that analyzes linguistic and stylistic signals to estimate how “AI-like” a piece of text sounds.

I sampled 76 Reddit posts from r/popular and r/ChatGPT. These two subs kinda represent different corners of Reddit, while r/popular mixes all kinds of topics from different communities, r/ChatGPT is where people who already enjoy or use ChatGPT a lot discuss things.

Results are:

r/popular → 5 out of 13 posts (~38%) were likely AI-written or partially AI-assisted

r/ChatGPT → 23 out of 63 posts (~36%) showed similar signs

Of course this experiment has limits: the detector needs at least ~350 words of input, so most short posts or one-liners couldn’t be tested at all. That means these numbers mostly reflect longer posts, not memes or quick questions. But still, I thought it was interesting enough to share.

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