The Most Expensive Model Is Not Always the Fastest Route

Short summary

The author argues that always using the strongest AI model for coding tasks wastes tokens and time. Instead, tasks should be routed by uncertainty: frozen, deterministic work goes to cheaper models while ambiguous decisions stay on expensive ones. They released an open-source Codex skill called Adaptive Model Router with a 14-case regression that scored 14/14 when guided versus 5-6/14 unguided.

• •Route tasks by uncertainty level, not by perceived difficulty
• •Four tiers: direct edits, frozen-rule execution, cross-source synthesis, high-consequence decisions
• •Open-source MIT-licensed Codex skill with regression test suite

Generated with AI, which can make mistakes.