Andrej Karpathy says he built a curated video site in a weekend with Claude
According to The Decoder, Andrej Karpathy used Anthropic’s Opus 5.5 model to filter 43 million Hacker News comments from 20 years into 6,454 recommended videos on a site called HackerTube. He says the viewing experience is significantly better than YouTube’s recommendations, and that a second site, TristanTube, with 47,000 videos, was built in about three minutes with Claude Code.
The DecoderOriginally published 1 min
Why it matters
These are Karpathy’s own claims about personal projects, and the comparison with YouTube has not been independently tested. Still, he says Claude Code handled nearly all the work, from data analysis to server setup, leaving him only to obtain an API key, rent a server and buy a domain.
It illustrates how quickly a single person can now build data-heavy tools, which matters for how organizations think about internal prototyping.
The Verge reports that eBay appears to have blocked AI agents, including Meta’s Muse, from browsing its platform. A reader told the outlet his Muse agent had compiled a daily digest of watch listings on sites like eBay for several weeks. We could only read an excerpt, and eBay’s position is not stated there.
Anthropic announced on X two new models, Claude Fable 5.2 and Mythos 5.2, which it says improve coding, reasoning and vision. The company says Fable 5.2 is up to 30% faster than Fable 5.1 and now costs $8 per million input tokens and $40 per million output tokens, down from $10 and $50. It is available in the Claude Platform and Claude Code.
According to Bloomberg’s Mark Gurman, as relayed by The Verge, Apple CEO John Ternus is pushing AI chief Craig Federighi to speed up the Siri roadmap. The goal is a powerful AI agent able to compete with OpenAI’s Dots and Meta’s Muse. Federighi has reportedly delivered a working version of Siri AI on a very short timeline.
Meta says its Muse AI assistant can now build customized, app-like “spaces” inside the Muse app, such as a shopping hub, a school dashboard, a music tracker or a trivia game. Users can interact with them directly. TechCrunch frames it as a new way to collaborate with Muse agents.
The Verge
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