A free guide by New Money School
Claude Code
Stop burning your usage limit on your best model. Build a loop in Claude Code where your top model plans and judges, and a cheaper, faster model does the grunt work. Better results, way less usage.
This works with whatever your top model is, Fable 5 or Opus 4.8. Either way, it is too powerful to waste on tiny tasks. So you use it as your planner and judge, and let a cheaper, faster model like Haiku or Sonnet do the actual labor.
Step 1Set Your Top Model As The Planner
In Claude Code, run /model and pick your most powerful model (Fable 5, or Opus 4.8). Set /effort high for planning. This model writes the plan and reviews the final result, it does not do the grunt work.
Step 2Create A Cheap Executor Subagent
Make a subagent that runs on a cheap model to do the implementation. Just ask Claude to create one for you, or add a file at .claude/agents/executor.md with this inside:
File — .claude/agents/executor.mdCopy
--- name: executor description: Writes and edits from a given plan. Use for all implementation. model: haiku # or sonnet for harder work --- You implement exactly what the plan says. Don't redesign it.
Step 3Run The Loop
Now your top model plans, hands the work to the executor, and reviews it. Kick it off like this:
Prompt — Plan, Delegate, ReviewCopy
Write a detailed implementation plan for [X]. Don't build it yet. Then hand that plan to the executor subagent to implement. Once it's done, review the result yourself against the plan and fix anything it missed.
Your expensive model only spends tokens on the two things that matter, the strategy and the quality check, while the cheap model does the heavy lifting.
Level UpMake It Run Itself
Two more Claude Code commands turn this into a hands-off system:
/goal
Sets the finish line so it keeps working until the job actually hits your criteria, and it auto-checks completion with a separate cheaper model. Example: /goal all requirements are met and the code passes its own review.
/loop and /schedule
/loop re-runs it on an interval on your computer. /schedule moves it to the cloud so it keeps running even when your laptop is closed.
Bonus Savers
Use /effort low for simple steps, /clear between unrelated tasks, and put standing context in a CLAUDE.md file so you are not re-explaining yourself.