A model router optimizes cost and creates fairness problems across customer segments. How would you fix it?

Instruction: Explain how you would handle segment-level fairness issues caused by routing decisions.

Context: Tests how the candidate diagnoses the problem, chooses the safest next step, and reasons through recovery. Explain how you would handle segment-level fairness issues caused by routing decisions.

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I would treat fairness as a routing quality issue, not as an unfortunate side effect. If certain segments are systematically getting the cheaper path with worse outcomes, the router is encoding an unacceptable product policy whether anyone intended it or not.

I would add segment-level evaluation, inspect...

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