The one thing an AI can do for you that you never have to ask for: a short briefing waiting when you sit down, saying what came in overnight, what is unanswered and how old, what falls due this week, and what changed on events already confirmed. One job, done four ways, on Claude, ChatGPT, Copilot and Gemini, with the permission conversation in plain terms and the test that proves it is not quietly reprinting yesterday.
What should arrive before you start, what must never be in it, and what it looks like on four different desks.
Your sources, the instruction that produces the briefing, and the permission you are about to grant.
The same job, set up four ways: Claude Cowork, ChatGPT Work, Microsoft 365 Copilot and Gemini.
Breaking it on purpose, reading it in two minutes, fixing a wrong line, and knowing when to switch it off.