AI ToolsMay 22, 2026·5 min read
GBrain: Garry Tan's Open-Source AI Agent Brain With Self-Wiring Knowledge Graph
GBrain is an open-source AI agent memory system built by Garry Tan, President and CEO of Y Combinator, to power his personal agents in production. It features a self-wiring typed knowledge graph, hybrid vector + graph search with P@5 of 49.1%, and a fully autonomous doctor command that optimizes brain health without human intervention.
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