karpathy/nanoGPT
The simplest, fastest repository for training/finetuning medium-sized GPTs.
nanoGPT is an open source Python project by karpathy, created in December 2022. It has 63,976 stars and 10,984 forks on GitHub and is released under the MIT license. Its most recent commit was on Nov 12, 2025, and it has 248 open issues. On FindOpenSource.dev it is listed under LLMs.
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