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micrograd

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Detailed python notes & code for lectures and exercises of Andrej Karpathy's course "Neural Networks: Zero to Hero." The course is focused on building neural networks from scratch.

  • Updated Jun 3, 2026
  • Jupyter Notebook

A GPT built and trained in 243 lines of pure, dependency-free Python - no PyTorch, no NumPy. Based on Andrej Karpathy's microgpt, it hand-rolls autograd, attention and Adam to show how little a language model really needs.

  • Updated Feb 12, 2026
  • Python

The easiest way to build Neural Networks in C# within Unity. The open-source AI project implements a scalar-valued autograd engine so you don't have to deal with backpropagation, and a Neural Network library. You can use it outside of Unity as well.

  • Updated Apr 28, 2026
  • C#

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