subagent-routing

Injects a subagent model-routing policy into the system prompt each turn (for the frontier pi profile). The orchestrator plans, specs, and judges on its own live model and fans implementation out to other configured models, then spawns a reviewer subagent to grade each result before accepting it.

The fan-out menu is built each turn from the model registry — every configured, authenticated model, minus local (mlx/*) models and the orchestrator's own — ranked by the active mode:

• cost — the cheapest models (subscription models with $0 rates rank first)
• balance — the middle of the price band (default)
• performance — the priciest (price as capability proxy; the registry carries no benchmark data)

Switch with /subagent-routing cost|balance|performance (persisted to <agentDir>/subagent-routing.json, applies next turn).

Nothing names the orchestrator or judge model: those inherit the live model (spawn a subagent with no model override and it runs on whatever you are running).

Pairs with the active-model extension (which tells the orchestrator its live identity), the global reviewer agent type (~/.pi/agent/agents/reviewer.md), and @tintinweb/pi-subagents (which provides the Agent tool this policy drives).

Install

pi install npm:@guygrigsby/pi-subagent-routing