Claude hands you four models on one dropdown. Most people run the smartest one on everything, cap their usage, and get the “you’re out until tomorrow” message right when they finally sit down to do the work that matters. Here’s the part nobody tells you: you’re not paying per word. You’re spending a limit that resets on a timer. Your most powerful model drains that limit the fastest. Run it on “clean up this paragraph” and you just spent your best tool on busywork. The fix is one habit. Match the model to the job. • Your best model, for money work and anything that has to be right. • Your everyday model, for most writing, planning, and research. • Your lightest model, for quick edits and simple stuff. • Running low? Drop a step lighter and keep working instead of getting stuck. Do that and your access lasts all week instead of dying by noon. I built a free tool to make it automatic. It’s called The Model Stack, and it’s in the classroom. Inside you get: • A cheat sheet you can screenshot (which model for what) • A copy-paste prompt that builds your own routing coach, right in the Claude app, in about 2 minutes • Two versions: Beginner if you use Claude in the app or web, Advanced if you build with Claude Code or Cowork Open the lesson, screenshot the cheat sheet, and stop getting locked out. Direct link: buildorderos.com/modelstack