{"type":"post","stable_id":"post:luna-worker-model-routing","slug":"luna-worker-model-routing","title":"Luna Worker Routing Needs A Written Contract","description":"A custom worker model can save expensive parent-agent context only when delegation has an explicit task contract, budget, stop rule, and verification receipt.","retrieval_nugget":"A custom worker model can save expensive parent-agent context only when delegation has an explicit task contract, budget, stop rule, and verification receipt. The Luna-worker signal points at a pattern that matters more than the exact model name: delegate bounded work to a cheaper or specialized worker only when the parent agent can encode the contract.","status":"published","published_at":"2026-08-04","updated_at":"2026-08-04","record_date":"2026-08-04","date_kind":"published_at","topics":["codex","model-routing","coding-agents","operations"],"source_urls":["https://x.com/Voxyz_ai/status/2083545774768402673"],"visuals":[{"id":"luna-worker-model-routing","kind":"editorial-diagram","role":"hero","src":"/images/drip/luna-worker-model-routing/luna-worker-model-routing.webp","alt":"Hand-drawn delegation diagram where a parent agent splits work, a router checks model choice, budget, and stop condition, and a worker returns patch and receipt to verification.","caption":"New Runtime synthesis: delegated workers help only when the boundary is encoded before the task starts.","credit":"New Runtime synthesis from public source material","source_url":"https://x.com/Voxyz_ai/status/2083545774768402673","generated_with":"gemini-3.1-flash-image","width":1600,"height":900,"legend":[{"label":"Parent","description":"The expensive agent breaks work into bounded packets."},{"label":"Router","description":"Model choice, cost budget, and stop condition are checked before delegation."},{"label":"Verify","description":"The worker returns a patch and receipt, not an unbounded claim of completion."}]}],"schema_version":"newruntime-agent-readable-v0.2","routes":{"html":"https://newruntime.com/posts/luna-worker-model-routing/","markdown":"https://newruntime.com/posts/luna-worker-model-routing.md","json":"https://newruntime.com/posts/luna-worker-model-routing.json"}}