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LiveUpdated 2026-11-01 21:13 UTC

2 hours with Opus 5.5 on Medium effort. Not even High.

2 hours with Opus 5.5 on Medium effort. Not even High. Karpathy didn’t like YouTube’s recommendations, so he used the…

This is a dev post classified by AGK Intelligence as AI dev tools (a tool drop), kept by the Dev Radar because it carries real work, not commentary.

2 hours with Opus 5.5 on Medium effort. Not even High. Karpathy didn’t like YouTube’s recommendations, so he used the videos engineers kept recommending to each other in Hacker News comments over 20 years instead. Claude scanned 43 million comments, found 6,454 such videos, and built and launched a website to browse them, all in about two hours.

Posted by Rohan Paul (160.6k followers) 1 h ago · 66 likes · 6.4k views · view the original post on X. Kept by the Dev Radar as AI dev tools.

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Every post is read and classified by AGK Intelligence: what it is, which market it belongs to, and whether the link is a real tool. 31.3k posts from 5k X accounts over the last 21 days, 8.9k tools, 12 markets. New posts are collected several times an hour and the full ranking is recomputed every hour — last update 2026-11-01 21:13 UTC. Full method.