This is wild. Andrej Karpathy built his own YouTube in about 2 hours. He says he didn't touch the code. HackerTube = 6,454 videos recommended in Hacker News comments, 2007-2026, across 150 topics. How it worked:
→ Opus 5.5 downloaded all HN comments
→ Sonnet filtered them in
Karpathy Reportedly Builds HackerTube With Opus and Sonnet in Two Hours
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