How LLMs Are Trained
Learn the stages of LLM training: pre-training on massive corpora, supervised fine-tuning, and RLHF, and why each stage matters for model behavior.
Three Stages of LLM Training
LLMs are built in three stages: pre-training teaches language and knowledge, fine-tuning teaches instruction-following, and RLHF aligns the model with what people want.
Pre-Training: Next Token Prediction at Scale
Pre-training feeds the model tons of text with one job: predict the next token. That simple goal is enough to teach grammar, facts, and reasoning along the way.