Start Your Journey
Build your personal knowledge graph and discover meaningful connections across 12 domains of human knowledge
How it works
React to just a few entities and Brain will start recommending books, concepts, people, and works tailored to your unique intellectual profile. The more you interact, the better it gets.
Semantic Discovery
Explore deep connections between entities using 384-dimensional vector embeddings. Discover how different ideas, works, and concepts relate to each other.
Cross-Domain Learning
Break out of knowledge silos. Connect philosophy with science, literature with mathematics, art with technology.
Track Your Growth
Build a living record of your intellectual journey. Every reaction becomes part of your personal knowledge graph and learning history.
No Engagement Optimization
Brain is designed for your growth, not to maximize your time spent. We reject the attention economy in favor of meaningful learning.
Free to use. No ads. No data selling. Built for learners who value depth over distraction.
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Technology in service of consciousness