Karpathy's LLM Wiki is right. I just didn't want to run it locally.

Andrej Karpathy published a gist called "LLM Wiki" describing a pattern that's been bouncing around my head for a year. Instead of dumping documents into RAG and re-deriving knowledge on every query, you have an LLM agent incrementally maintain a persistent wiki of markdown files. Obsidian on one side, Claude Code on the other. The LLM does the bookkeeping. You do the thinking. The pattern is right. I built Hjarni because I wanted to live inside it every day, and the local version kept getting in my way. What Karpathy gets right RAG rediscovers knowledge from scratch on every question. A maintained wiki compounds . Cross-references are already there. Contradictions have already been flagged. The synthesis tax is paid once, not on every query. And the bottleneck isn't reading or thinking. It's bookkeeping. Updating ten pages when one new source arrives. Noticing that an article from today contradicts something you wrote three weeks ago. Humans abandon wikis because maintenance grows fas