# Agent Usage Optimizer Complexity Tier Model Mapping

> Sub-skill of agent-usage-optimizer: Complexity Tier → Model Mapping.

- Skill: `vamseeachanta/agent-usage-optimizer-complexity-tier-model-mapping` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/agent-usage-optimizer-complexity-tier-model-mapping`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/agent-usage-optimizer-complexity-tier-model-mapping/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/agent-usage-optimizer-complexity-tier-model-mapping

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# Complexity Tier → Model Mapping

## Complexity Tier → Model Mapping


Use this alongside Route mapping when task nature is clear:

| Complexity tier | Keywords | Recommended model |
|----------------|----------|------------------|
| `routine` | format, rename, config, scaffold, update-doc, copy | Codex Haiku |
| `standard` | implement, review, test, fix, migrate, document | Codex Sonnet |
| `complex` | architecture, design, cross-repo, security, compound | Codex Opus |

**Key insight**: the gap between theoretical and observed exposure is an implementation gap —
not a capability gap. Routing routine tasks to cheaper models closes this gap for our workflow.
See WRK-5002 to automate tier detection in `task_classifier.sh`.

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*Use this skill before any multi-item work session or when quota is a concern.*
*Related: `ai/optimization/model-selection`, `ai/optimization/usage-optimization`*