Building an LLM in NodeJS
Learn how large language models actually work by building one from scratch in Node.js and TypeScript.
We’ll build every layer, from attention mechanisms to the training loop.
Dataset, dataloader, attention, transformer block, GPT, and the training loop built up chapter by chapter.
Every chapter has a runnable entry point in the @node-llm/chapters package, all on GitHub .
Live WebGPU demos from the @node-llm/playground package are embedded throughout.