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GPT-4chan: This is the worst AI ever

GPT-4chan: This is the worst AI ever on HackerTube: recommended by 3 Hacker News commenters across 3 separate months, 2022–2026.

Yannic Kilcher explains how he trained a language model on three years of 4chan's /pol/ board and let it post on the site. He evaluates how good the model was and discusses the ethics and fallout.

Why Hacker News recommends it

HN points to it as the definitive account of the GPT-4chan experiment, used in debates on LLM bias, truthfulness and bots.

people recommended it
3
separate months
3
strong recommendations
1
discussed on HN
2022–2026
“might be the coolest thing an LLM has ever done on video”
— benreesman, Nov 2024, in “Breaking the 4Chan CAPTCHA”

What HN commenters said

18 Hacker News comments link this video. Each one links back to its thread.

benreesmanNov 2024Strongly recommends

In my opinion the granddaddy of all 4chan CAPTCHA busts is still Yannick Kilcher’s GPT-J tune on “Raiders of the Lost Kek” set, and might be the coolest thing an LLM has ever done on video: ▶ this video

in “Breaking the 4Chan CAPTCHA” · View on HN

sigmoid10Mar 2024Recommends

I still love this experiment: ▶ this video The theories about the origins of these commenters were amazing. There's nothing to say that other people are not doing the exact same thing right now here on HN and other places. And very few people would even notice, because open LLMs have progressed significantly since then.

in “Reddit Launches Long-Awaited IPO with $748M Target” · View on HN

thegreatdukdJun 2022Recommends

There is a solid video explanation (though the author is undermining the toxicity of the average 4chan /pol/ posts): ▶ this video . A really interesting experiment.

in “GPT-4chan” · View on HN

heliumteraFeb 2026Cites it

>isn't it a matter of time before it succeeds in some way it is not a matter of time. given enough time, every `attempt` to emulate 4chan would succeed? initiatives to emulate 4chan already happened successfully, this is not close. this, is the same models over again. some people confuse asking standard models from standards providers to do something with an genuine attempt. this thing states it is 4chan for Clankers, but feels like Reddit for Redittors. there was already a MUCH, MUCH smaller model running loose on 4chan (before agents hiting mainstream) that became 4chan folklore. it was called Seychelles anon ( ▶ this video , by the author YannicKilcher). but no, if you ask gpt or claude, all you get back is Reddit. and it is not a matter of time until this changes. if you are a redditor, you probably love llms.

in “4chan for Clankers” · View on HN

ProllyInfamousFeb 2026Cites it

GPT-4chan came out three summers ago , trained on /pol/ datasets: < ▶ this video > In some ways, it was actually more helpful ("more truthful ") than mainstream ChatGPT.

in “4chan for Clankers” · View on HN

sunaookamiAug 2025Cites it

This was one guy that did it for a few days (weeks?). Not some "common occurence". Funny video btw: ▶ this video

in “4chan will refuse to pay daily online safety fines, lawyer tells BBC” · View on HN

Show 12 more comments
IvanAchlaqullahApr 2024Cites it

> TruthfulQA Wait, people still use this benchmark? I hear there's a huge flaw on it. For examples, fine-tuning the model on 4chan make it scores better on TruthfulQA. It becomes very offensive afterwards though, for obvious reasons. See GPT-4chan [1] [1] ▶ this video

in “Phi-3 Technical Report” · View on HN

ProllyInfamousFeb 2024Cites it

I just want to remind everybody, summer 2022 a jokester trained an LLM using 4chan as its source material... which ended up being "more truthful" than ChatGPT [1]. [1] "GPT-4chan is worst AI ever!" ▶ this video

in “ChatGPT Generating Racist Content” · View on HN

flangola7Mar 2023Cites it

▶ this video The internet will be saturated with fake people soon. Someone already did a PoC of this on 4chan as a joke with just a small GPT2 model. In a few years you won't be able to tell if you're talking to a human unless they're physically in front of you.

in “Microsoft Kosmos-1: A Multimodal Large Language Model” · View on HN

EGregMar 2023Cites it

This is different. It can act just like humans do for most people who skim comments won't be able to tell the difference. Note this was in 2020: [link] And here's 4chan bot: ▶ this video I can tell you that HN is probably already being infiltrated as well. SPAM can't gang up on you in a forum and downvote you and turn your friends against you and destroy your reputation within 1 hour online. But soon, it will. The web as we know it is soon going to be over.

in “The genie escapes: Stanford copies the ChatGPT AI for less than $600” · View on HN

AlbertoGPMar 2023Cites it

GPT models have been shown to get significantly more truthful when trained on the right data set: ▶ this video The 30 million they are investing should be enough to reproduce that. Looking forward to it!

in “Mozilla.ai: Investing in Trustworthy AI” · View on HN

type0Feb 2023Cites it

I'm fairly certain you can create AI bot that would indistinguishably mimic your regular HN user, in the same style as GPT-4chan was ▶ this video The only problem is that it might be banned for spewing too many falsehoods.

in “Ask HN: Does the HN commentariat have a reductive view of what a human being is?” · View on HN

kcmastrpcJan 2023Cites it

This has already happened, someone trained a giant model on 4chan then unleashed on 4chan... hilarious stuff. ▶ this video

in “Conservatives Are Panicking About AI Bias, Think ChatGPT Has Gone 'Woke'” · View on HN

visargaNov 2022Cites it

That's nothing. Someone trained a GPT-J 6B model on 4chan and then let the model loose on the forums for a day. It took about 15k messages until people suspected something was off, and even that was because the country flags, Seychelles, a rare flag on 4chan, were a giveaway. video: ▶ this video model: [link]

in “CICERO: An AI agent that negotiates, persuades, and cooperates with people” · View on HN

benreesmanJul 2022Cites it

So green text is easier to spoof than HN comments, but my, uh, friend tells me that the HN comment corpus is floating around. Someone is eventually going to speed run 10k karma on HN and YouTube it. This year? Next? Who knows. But not a decade. ▶ this video

in “Are language models deprived of electric sleep?” · View on HN

albertzeyerJun 2022Cites it

I'm not the author. The author is Yannic Kilcher. Maybe he reads it here as well though. I don't know if he is active on HN. Check out the video: ▶ this video

in “GPT-4chan” · View on HN

sitkackJun 2022Cites it

All the search engines are moving towards language models. I think language models are on a similar trajectory as sequencing the genome. The first sequences were massive undertakings, 15M USD in 2006, 100 USD now. [link] On the Dangers of Stochastic Parrots [link] "Imagine you are remram and are looking to buy insurance, what are three things that could convince you to purchase ...." You can take the generic "trained on the world" language model and filter it down to the language model of remram. GPT-4Chan ▶ this video

in “Ask HN: GPT-3 reveals my full name – can I do anything?” · View on HN

benreesmanJan 2025Joke

Operator-aligned models are believed by many to be more performant. [link] Sometimes with hilarious consequences: ▶ this video

in “DeepSeek's Hidden Bias: How We Cut It by 76% Without Performance Loss” · View on HN

Topics & tags

LLMs & generative AIAI safety, AGI & impactgpt-4chanlanguage models4chanai ethicsfine-tuning