Five stations, one direction of travel — intent in, verified change out.
| Role | Model | $ / 1M in · out | Share of work |
|---|---|---|---|
| Strategist | Fable 5 | $10 · $50 | ~5% — judgment only |
| Architect | Opus 4.8 | $5 · $25 | Planning + hard 15% |
| Workhorse | Sonnet 5 | $3 · $15 | ~80% — the volume |
| Scout | Haiku 4.5 | $1 · $5 | Recon, near-free |
| Editor | Haiku 4.5 | $1 · $5 | Trivial edits, near-free |
Comparative advantage: every task goes to the cheapest model that does it excellently — the strongest model is spent only where a wrong decision costs more than the consultation.
Agents write lessons to memory. /triad-tune periodically audits them, and proposes config diffs against the triad's own doctrine and agent definitions. A human approves before anything is rewritten.