Codex CLI cost optimization for high-volume agent usage (EXPLAINED)

TL;DR — Quick Answer
Reduce context size, cap iterations, cache repo maps, route simple tasks to cheaper models, enforce retrieval over full-repo dumps, and measure cost per successful PR — not cost per run.
The Interview Question
Your platform team runs Codex CLI jobs for thousands of tickets/month. How do you optimize cost without destroying task success rate?
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Codex CLICostContext EngineeringOpenAIMicrosoft