Updated todayNewin the edition since 3 Nov 20262 sources

Karpathy's HackerTube built with Claude

The gist

Latest: Karpathy Built HackerTube from 43M HN Comments in Two Hours With Claude

The project is a concrete example of a solo developer compressing what Karpathy described as work that would normally take weeks or months into a two-hour session using an AI coding assistant. It also produces a publicly available dataset others can reuse.

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The full picture

Andrej Karpathy used Claude Opus 5.5 to analyze 43 million Hacker News comments spanning 20 years, extract 6,454 YouTube video recommendations engineers had repeatedly made, and build and deploy a browsable website called HackerTube. The project took roughly two hours on Claude's Medium effort setting. Karpathy's only manual steps were creating a Google Cloud API key, spinning up a VPS, and buying the domain; Claude handled data analysis, code writing, security hardening, and deployment. HackerTube uses a representative mid-video frame as its thumbnail rather than A/B-tested uploads and avoids algorithmic recommendations. The underlying comment-analysis data is available as a zip file for others to build their own versions.

How it developed

First in the edition · 3 November 2026

2 November 2026in the 3 Nov edition

Andrej Karpathy built and deployed HackerTube, a curated video site drawn from 6,454 YouTube recommendations extracted from 43 million Hacker News comments spanning 20 years, in roughly two hours using Claude Opus 5.5.

Karpathy described his own role as creating a Google Cloud API key, spinning up a VPS, and buying the domain; Claude handled data analysis, code writing, security hardening, and deployment. The site uses a mid-video frame as its thumbnail rather than A/B-tested uploads and skips algorithmic recommendations; Karpathy released the underlying comment-analysis data as a zip file for others to build their own versions.

First citedRohan Paul on X The Neuron

Sources

Rohan Paul on X