Andrej Karpathy built a curated video platform in a weekend using Claude and 20 years of Hacker News

OpenAI co-founder Andrej Karpathy used Claude's Opus 5.5 to filter 43 million Hacker News comments into 6,454 curated videos. The result beats YouTube's own recommendations, he says. The article Andrej Karpathy built a curated video platfor