Data Party THU

Oct 4, 2026 · Artificial Intelligence

Cut Codex Costs: Assign Strong Model for Planning, Cheap Models for Execution & Review

This tutorial explains Codex's internal model call chain—planning, execution, review, and context compression—and shows how to configure separate models for each role via config.toml and worker.toml, using a powerful model for planning while delegating coding and review to cheaper alternatives, permanently reducing per-task API costs.