Andrej Karpathy's tiny scalar-valued autograd engine and neural net library on top — PyTorch-style API in ~100 lines for teaching backprop.

Andrej Karpathy's autoregressive character-level language model for generating more things — names, words, anything — from a small training set.

Train a 65M-parameter vision-language model from scratch in just 2 hours — readable, didactic implementation for learning VLM internals.

A comprehensive, open-source book explaining cryptocurrency technology from fundamentals to advanced topics. Covers 15 chapters spanning Bitcoin, Ethereum, DeFi, MEV, stablecoins, governance, and quantum resistance with expert reviews and community feedback.

Andrej Karpathy's quick illustration of reading books together with LLMs — annotate, ask questions, discuss as you go.

A 10-question quiz that maps your thinking patterns to established philosophical traditions across five dimensions: metaphysics, politics, epistemology, technology, and human nature. Reveals which philosophical schools align with how you naturally think.

Community-driven platform providing comprehensive learning paths and guides for developers to grow their careers. Offers role-based and skill-based roadmaps covering everything from frontend/backend development to AI engineering and DevOps.

Under-200-LOC HTTP server written in pure assembly, plus an experimental React Server Components implementation. Educational for those curious about going to the metal.

Three working examples showing how AI agent development evolved — from traditional RAG to SDKs and skill-based frameworks.

Example apps and reference recipes for the OpenClaw SDK, demonstrating common agent-coding patterns.

A visualization tool for books and literature that creates visual representations of literary content. Helps users explore and understand books through interactive visual elements and data visualization techniques.

An interactive geometric optimization challenge where users compete to pack 15 unit semicircles into the smallest possible enclosing circle. Participants submit coordinate solutions and are ranked on a leaderboard by their packing efficiency.

A collection of interactive computer vision tutorials and demos that teach you to build creative projects using hand tracking, voice control, and webcam input. Create games, music apps, and 3D experiences that respond to your gestures and movements.

An interactive coding platform for learning machine learning by implementing 200+ algorithms and research papers from scratch. Features gamified challenges, interactive visualizations, and a browser-based IDE to master ML concepts through hands-on coding.

An interactive map visualization that displays companies and organizations from Wikipedia data. Allows users to explore and discover companies geographically with zoom and navigation controls.

A gamified guitar learning platform that provides interactive lessons with live note feedback through your microphone. It teaches fretboard navigation, scales, chords, and musical theory through guided practice sessions and progress tracking.

A premium design library and educational resource for designers, developers, and founders who want to create exceptional software interfaces. Offers curated collections of articles, videos, interactive playgrounds, and design references focused on crafting products that feel timeless and thoughtfully made.