Andrej Karpathy built a curated video platform in a weekend using Claude and 20 years of Hacker News Matthias Bastian View the LinkedIn Profile of Matthias Bastian Nov 8, 2026 Andrej Karpathy, OpenAI co-founder and current Anthropic AI researcher, built HackerTube over a weekend using Claude's Opus 5.5 model. Claude filtered 43 million comments from 20 years of Hacker News and distilled them into 6,454 videos that keep getting recommended there. The result