Karpathy builds HackerTube, a video site from Hacker News recommendations, with Claude Opus 5.5
Overview
Andrej Karpathy says Claude Opus 5.5 built HackerTube, a YouTube-style site of videos recommended in Hacker News comments.
He says the model downloaded comments from 2007 to 2026, used Sonnet to filter out spam and low-quality posts, and narrowed them to 40K comments recommending a video, covering 6,454 videos.
The site offers personalized recommendations without user accounts and keyboard shortcuts. Karpathy says he is making a data export available so others can give it to their agent to build their own version.
Written by AI from the articles below · updated Oct 31, 4:09 PM ET
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- Andrej KarpathyBlogKarpathy builds HackerTube, a YouTube-style site of videos recommended on Hacker News
AIAndrej Karpathy says Claude Opus 5.5 built HackerTube, a YouTube-style site with 6,454 videos recommended in Hacker News comments from 2007 to 2026. Opus downloaded the comments and used Sonnet to filter out spam and low-quality posts, narrowing them to 40K comments recommending a video. The site offers personalized recommendations without user accounts, keyboard shortcuts, and a data export for building similar versions.
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