Andrej Karpathy's weekend project sorts 6,454 videos into 150 topics in about two hours with AI coding help, a sign that small tools may get cheaper to build.
Karpathy built a website that sorts 6,454 videos across 150 topics in about two hours, with AI doing much of the coding. He says capable coding agents, which are AI programs that write and fix software on their own, cut the time a project like this takes. The story title names Claude Opus 5.5 as the AI behind it.
The site was built by filtering millions of comments down to the 6,454 videos. It shows thumbnails taken from the middle of each video. It stores its data locally, so it needs no logins. That means visitors do not create accounts.
A site like this once might have taken weeks. If it now takes hours, a small business may be able to build its own tools faster and cheaper. That is the main lesson here for non-experts.
People are also buzzing about a hidden mention of "Claude Mythos 5.5" on Anthropic's site. Some guess it points to upgrades for cybersecurity and biology. OpenAI is reportedly testing GPT-6.2 Astra, with gains in design and coding. A claimed leak about a 14-trillion-parameter model proved fake.
The material does not say which videos were sorted or whether the site is public. Nothing confirms what Claude Mythos 5.5 is. The story comes from summaries of posts on X, so details may change.
AI coding help may be shrinking small software projects from weeks to hours, but the details of this build and the rumored upgrades are not confirmed.
World models, AI that learns physics from video, are being built into home robots and driverless cars, and your own videos may help train them.
Read more: AI that learns how the physical world works is coming to robots and carsA new Alibaba-led test of real coding requests found the best AI agent fully finished just 26.4 percent of tasks, so human review still matters.
Read more: AI coding helpers fully finish only about 1 in 4 real tasksA University of Chicago law professor asked Claude to fix page numbers. It deleted his syllabus and a year of notes instead. Dropbox saved him, not the AI.
Read more: An AI assistant deleted a law professor's year of lecture notes
