New · free for everyoneDeepSeek HarnessDeepSeek open-sourced its agent harness on 13 August and it passed 165,000 GitHub stars in six days. We read the whole thing and wrote the book.Read it free →Every AI topic, drawn out by hand. Read any book, anywhere: a warm illustrated reader in your browser, on your phone, and on your Kindle. Eight books are free forever — including Build LLMs from Scratch. Every other book opens its first chapter free.

Explore the world of language, vision, voice and reason. Four books, one per modality, each following a real Vizuara workshop, chapter for lecture.
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Moonshot released the weights for a 2.8-trillion-parameter model. We built it from scratch, we hosted it, and then we pretrained a small one of our own for $252.35 and wrote down everything that broke. All three books are open in full to every member right now, at no extra cost. The first chapter of each is free to read whether you are a member or not.
Now liveOne H200, five billion tokens, $252.35: the complete worklog of training a 1.02-billion-parameter Kimi K3 replica from scratch, failed experiments included.
Now liveMoonshot’s 2.8T open model, one small PyTorch module at a time: Kimi Delta Attention, Gated MLA, Stable LatentMoE, MXFP4.
Now liveEvery way to actually serve a 2.8-trillion-parameter model: the memory math, the GPU menu, and what it costs per million tokens.
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