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Karpathy builds HackerTube, a YouTube clone from Hacker News video recommendations

#hackertube#youtube-clone#hacker-news#claude-opus

Andrej Karpathy announced he used Claude Opus 5.5 to build HackerTube, a YouTube clone that surfaces videos recommended in Hacker News comments, as a reaction to YouTube's algorithm. The tool processed Hacker News comments, filtered them with Sonnet, and compiled 6,454 videos recommended from 2007-2026 across 150 topics.

Coverage timeline

  1. Andrej Karpathy
    HackerTube

    It was Friday night at 11pm, I was tired, I went to YouTube to watch something and realized that I was looking at an enshittified wall of slop. Insanely exaggerated thumbnails, dumb recommendations of the same tired topics, truly terrible idiocracy-grade content. I'm sure this algorithm works well for the median person on the internet, but it definitely does not work for me. So this morning (Saturday) I took a hold of my Opus 5.5 and gave it the task: Let's write our own YouTube clone based on whatever videos have been recommended on Hacker News. And Opus came back with: hackertube.org ! Opus downloaded all comments of HackerNews, filtered them down, ran Sonnet over them in a workflow, got rid of spam and low grade content, and narrowed them down to just 40K comments recommending a YouTube video. In total, we get 6,454 YouTube videos that have been recommended by a few people on HN from 2007-2026 across 150 topics. Then we wrap it up in a YouTube UI, get a domain, push to a VPS, secure

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