So the big news this week is that o3, OpenAI’s new language model, got 25% on FrontierMath. Let’s start by explaining what this means. What is o3? What is FrontierMath? A language model, as probably most people know, is one of these things like ChatGPT where you can ask it a question and it will write some sentences which are an attempt to give you an answer. There were language models before ChatGPT, and on the whole they couldn’t even write coherent sentences and paragraphs. ChatGPT was really...