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Build Logs · Subscribers · 13 Sep 2026 · 2 min
Stop paying frontier prices for formatting
My agent system routed work badly in both directions: expensive models doing trivial jobs, cheap models failing hard ones. How I think about matching the model to the job.
When I audited my agent system, the model setup was wrong in two directions at once.
Some jobs leaned on cheap, fast models for work that needed judgement, and the output showed it. Other jobs used a far more capable model than the task needed. And some of the model config was simply stale: old versions, wrong pricing metadata, so any cost-aware routing was working from bad numbers.
The fix is not “use the best model” or “use the cheapest model”. It is match the model to the job, and decide that on purpose.