What is ChatGPT doing...and why does it work?

In this engaging AMA-style presentation, Stephen Wolfram breaks down the core magic behind ChatGPT by illustrating how it constructs language “one word at a time.” He walks viewers through the foundational mechanics—how ChatGPT predicts the next most probable word based on patterns seen in massive text corpora—and explains the surprisingly simple yet powerful processes that allow it to generate human-like responses. Using intuitive analogies and step-by-step reasoning, the video demystifies how ChatGPT models language, why its responses can feel so coherent, and what “makes it work” beyond rote memorization.