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LLM-lab

Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

Demo video · www.youtube.com/…

LLM Visual Lab is a interactive course — fifteen lessons that run in your browser — that takes apart a small, real language model piece by piece: tokens, embeddings, training, attention, and next-token prediction. It tries to solve a personal problem: I'm an engineer who use AI in my daily job but I have a limited knowledge of how they actually works, this project has given me a deeper understanding how the llm works under the hood and have made it seem at least a bit less like magic.

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