LabSome things only click when you can touch them. Small interactive pieces grow here — one at a time. The context window, hands-on Slide a conversation longer and watch the earliest messages tip out of a fixed-size window. Try it → What does a sentence cost? Type a sentence and watch it fall apart into tokens — the pieces AI is billed by. And see why German costs more than English. Try it → A GPT in slow motion A real (tiny) GPT — the model type behind ChatGPT — runs right in your browser: watch it read, attend and weigh probabilities, one character at a time. Trained only on this site's articles. Try it → The die in the machine Ask the same question again and again — and watch the model roll a weighted die. A temperature dial reshapes the odds in real time. Try it → Confidently wrong Two answers to the same question, both equally confident — one invented. Can you catch the false one before you check the source? Try it →