🛠 Andrey Karpathy Built a YouTube Clone in Two Hours
On October 31, 2026, he launched HackerTube (hackertube.org) — a site featuring videos recommended in Hacker News comments from 2007 to 2026. Claude Opus 5.5 downloaded the HN archive (the open-index/hacker-news dataset on Hugging Face), and Claude Sonnet filtered out spam — resulting in 6,454 videos across 150 topics from approximately 40,000 recommendations. He did not write the code: he manually set up only the Google Cloud API key, VPS, and domain. No registration is required; 'For You' recommendations are processed in the browser.
🌍 The 'orchestrator + worker' pattern: the expensive Opus 5.5 ($4/M input, $20/M output) leads architecture and deployment, while the cheaper Sonnet handles mass filtering. The ~2-hour estimate serves as a benchmark for the cost and speed of building web products with agents.
👤 Open the site to see what HN considered worthy over 19 years. The dataset is exportable: you can give it to your own agent and build a similar project.
Source 1: https://karpathy.bearblog.dev/hacker-tube/ Source 2: https://hackertube.org/