Build a Reasoning LLM from Scratch: A Complete Guide to GRPO, RoPE & Pretraining.
Introduction A reasoning LLM is a language model trained not just to predict the next word, but to work through a problem step by step and verify its own conclusions before answering the approach behind models like OpenAI’s o1 and DeepSeek’s R1. This guide condenses a practical path to building a compact 300–400M parameter GPT-style […]
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