I built an interactive HN Simulator
Hey HN! Just for fun, I built an interactive Hacker News Simulator. You can submit text posts and links, just like the real HN. But on HN Simulator, all of the comments are generated by LLMs + generate instantly. The best way to use it (IMHO) is to submit a text post or a curl-able URL here: https://news.ysimulator.run/submit. You don't need an account to post. When you do that, various prompts will be built from a library of commenter archetypes, moods, and shapes. The AI commenters will actually respond to your text post and/or submitted link. I really wanted it to feel…
I built an interactive HN Simulator launched on November 24, 2025 with 538 votes, #18 of 9,796 launches that month and more than 99% of that year's launches.
In plain words
The HN Simulator is an interactive recreation of Hacker News where users can submit text posts and links without creating an account. All comments are generated instantly by large language models using a library of commenter archetypes, moods, and styles, designed to respond authentically to user submissions. Built with Node, it allows users to submit URLs or text via curl, creating a realistic simulation of the discussion experience with AI-generated responses that aim to closely mimic genuine community interaction.
written from the facts on this page · September 2026
From the sources
Browse the latest posts on Hacker News Simulator. Unlike the real HN, all comments are generated by LLMs. Posts, links, and titles are still user-submitted.
In the maker’s words, at launch
Hey HN! Just for fun, I built an interactive Hacker News Simulator. You can submit text posts and links, just like the real HN. But on HN Simulator, all of the comments are generated by LLMs + generate instantly. The best way to use it (IMHO) is to submit a text post or a curl-able URL here…
Does a similar job
all alternatives →- FHFake Hacker News – See what HN has to say before you post2023 · fakehn.com · ▲107
Hi HN! I’ve been lurking for a while, but out of fear of being steamrolled by HN readers or maybe just natural introversion, I’ve always been too scared to post or comment. Which is why 1. this is my first real Hacker News submission 2. my friend Michael and I built "Fake" Hacker News, a place to post and see what AI-generated HN comments might say. Here’s a video of me using fakeHN to test this very submission: https://www.loom.com/share/4b9f4f9d7c77489a86baeb92ec55a1ed?... And an example of one of our generated posts:…
Exploring HN by mapping and analyzing 40M posts and comments for fun2024 · blog.wilsonl.in · ▲520Accessible end-to-end deep dive of crawling, embedding, projecting, and semantic searching all of Hacker News for my Hackerverse project.
My recommendation engine for Hacker News2023 · hn-recommend.julienc.me · ▲314Hi! I’m Julien and I built a recommendation engine for Hacker News. I feel like this website is a gold mine. Every day, I find some very interesting stories about a topic. And sometimes, I want to find other stories covering that same topic but I can’t. Hacker News has years of history of awesome discussion and ressources. Unfortunately, I think HN Algolia isn’t helpful in searching these old threads. As a student, I want to learn a lot from this website. This is why I created HN Recommend. Input a sentence or the URL of an article, and get the most popular and similar posts from Hacker…
- HRHN Replies – Get notified of replies to your comments2016 · hnreplies.com · ▲217
- ATAnalyzing top HN posts with language models2022 · ▲117
Hi HN, I spent a few weeks looking at the top HN posts of all time. This included exploration, clustering, creating visualizations, and zooming in on what (to me personally) seems like some of the best discussions on here. Three things in this post: 1- The interesting groups of HN posts 2- The interactive visualizations that you can explore in your browser 3- The data from this exploration -- this includes CSV of the titles as well as the text embeddings of 3,000 Ask HN articles. Blog post about this whole process here: [1] ============ 1- The interesting groups of HN posts From the…
Generate startup ideas based on HN comments2023 · hn-ideas.tjcx.me · ▲164Generate startup ideas on a particular topic, based on insights from Hacker News comments.
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