How I use Claude Code subagents to make my Claude Pro limits last longer

Why I pay for Claude Pro, the 20€/month plan, and I use Claude Code almost every day on my side projects, mostly Draft Omen and Book Corners. Pro is a flat fee, so I never pay more than 20€ a month. What I can run out of is usage. Pro gives you a limited amount of usage every 5 hours and every week, and when I hit the limit I have to wait for it to reset before I can keep working. Until last week every session ran on Opus 5.5 from start to finish. Opus read the files, wrote the code, ran the tests, fixed the lint errors, ran the tests again, committed and opened the pull request. Only a small part of that work needs the best model. Once the plan is clear, a cheaper model can write the code and run the tests. So I changed my setup. The main session still runs on Opus 5.5 at medium effort and makes the decisions. A Sonnet 5.5 subagent writes the code, and two smaller jobs go to Haiku 5.5. In this post I will show the setup, all the files you need to copy it and how much it saved me. The…