The Advisor tool from OpenRouter lets smaller, lower-cost models call a higher‑intelligence advisor model at runtime so they can ask for help on difficult queries. Launched 2026-06-08, the server-side primitive is positioned to reduce failure modes (e.g., doom loops) and make it practical to shift workloads to cheaper models while retaining quality through targeted consults.
OpenRouter announced a new server tool called "Advisor" on 2026-06-08 (shared via @OpenRouter), designed to let smaller, lower-cost models consult a higher‑intelligence advisor model at runtime.
One of the most important primitives for helping you migrate to lower-cost models: an Advisor tool
Allow your lower-cost models to call for help!
OpenRouter (@OpenRouter)
New server tool: Advisor
Let smaller models consult a higher-intelligence "advisor" model.
Helps them escape doom loops, and helps you migrate to cheaper models! 🧵
— https://nitter.net/OpenRouter/status/2064004944613527730#m