Subagent effort set to low: 72% fewer tokens, seeded bugs still caught
One code-review task, review subagent at the inherited high vs low effort, 5 runs each. Wall time down 73%; both arms caught all 6 seeded bugs (lenient), but low was terser and occasionally missed some.
-72%Median total tokens 659k → 183k (n=5 per arm, one task)