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I implemented a modern LLM in 700 lines of C

This story is from 2026-08-27. It is preserved in the archive; the latest stories are on the live feed.

I’ve been working on a small project called gemma4.c. The idea is pretty simple: you can download a modern language model, compile one 700-line C file, and have it generate text on an ordinary CPU. Then you can read that same file from top to bottom and understand exactly how the model generates ea…

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  1. 2026-08-27 23:53 · r/LocalLLaMA
    I implemented a modern LLM in 700 lines of C

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