Lead storyExplainers
Chatbots feel like they think, but underneath they do one thing very well: predict the next piece of text. This explainer walks through tokens, training, transformers, fine-tuning and context windows, and shows why that design explains both the impressive answers and the confident mistakes.
Read the storyNew reporting, guides and analysis.
AI hallucinations are not random glitches. They follow predictably from how language models are built, which means you can anticipate when they are likely, recognize the warning signs and set up simple checks that catch invented facts, fake citations and confident errors.
Start here
New to AI? Read these first. How it actually works, in plain English.
What to use, and how to choose.
Getting real work done with AI.
The rules shaping AI in America.
Strategy, costs and adoption.
Jobs, skills and staying relevant.
AI in schools, universities and learning.
Bias, privacy, safety and trust.
AI for writers, designers, video and music.
