How AI Models Are Actually Trained (Step-by-Step)

AI models don’t magically “learn.” They are trained using massive datasets, powerful GPUs, and mathematical optimization. In this documentary-style explainer, we break down how modern AI systems are actually trained — step by step. You’ll learn: • What pretraining really means • How neural networks adjust billions of parameters • What “loss” and gradient descent are • How GPUs power large-scale training • What fine-tuning and human feedback do • Why training costs millions of dollars • Why AI still makes mistakes If you want to understand what happens behind the scenes before an AI model ever answers your question, this video explains it clearly and without hype. Subscribe for deep dives into how AI systems really work.