Build a Reasoning Model From Scratch Is Out

This article announces the publication of 'Build a Reasoning Model (From Scratch)', a sequel to 'Build a Large Language Model (From Scratch)'. The book covers implementing modern reasoning techniques from scratch on a Qwen3 base model, focusing on inference scaling, reinforcement learning, and distillation. It includes full Qwen3 architecture details in the appendix. The author shares their excitement about the 440-page full-color book, thanks early readers, and provides links for purchase from the publisher and Amazon preorder. This is relevant to IT/technology as it covers AI model development and programming.