Don't Use Karpathy's Second Brain (I BUILT SOMETHING BETTER)

Don't Use Karpathy's Second Brain (I BUILT SOMETHING BETTER)

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I improved Andrej Karpathy's famous second brain system, and rebuilt it from scratch as a knowledge base optimized for Claude. In this video, I'll walk you through the exact layout, structure, and setup that turns Claude into your personal AI research assistant with near-infinite memory and massively reduced token costs when used with Claude or Codex.

If you've been using Claude or Claude Code and noticed it forgets context, loses track of your projects, or can't connect ideas across topics, but this is the fix. Karpathy's original second brain is a great starting point, but it was designed for human note-taking, not for AI retrieval. This rebuilt version is structured around how Claude actually parses, links, and reasons over information.

I'll show you the full setup in Obsidian: folder hierarchy, tagging system, linking strategy, file naming conventions, and the exact way to plug it into Claude Code so it can pull context on demand. By the end of the video, you'll have a working knowledge base that makes Claude smarter, more consistent, and finally able to remember your work.

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#karpathy #obsidian #claude #ai #secondbrain