HackerTube

Andrej Karpathy launched HackerTube (hackertube.org), a YouTube alternative built in roughly two hours using Anthropic's Opus 5.5, after growing frustrated with YouTube's recommendations. The site surfaces 6,454 YouTube videos recommended in Hacker News comments from 2007 to 2026, curated from about 40,000 video-recommending comments that were filtered for spam and low-quality content using Sonnet across 150 topics. HackerTube displays the 50% video frame instead of creator-uploaded thumbnails, offers account-free personalized "For You" recommendations with state stored in the local browser session, includes keyboard shortcuts, and exports site data so users can have agents build their own versions. The project underscores how quickly AI coding agents can now ship consumer web products, and follows Karpathy's ongoing experiments with AI-assisted development. What to watch: whether the site sustains traffic beyond the initial Hacker News spike, and whether similar AI-built clones emerge targeting other enshittified platforms.