Auto Router: 5 Improvements for Cost, Speed, and Team Control
Predict cache costs, set speed by tier, let teams manage routers, and see the chosen model and savings in your CLI.
Predict cache costs, set speed by tier, let teams manage routers, and see the chosen model and savings in your CLI.
Weβre improving Fuse V2 by combining complexity and capability assessment to learn where each model succeeds, fails, and needs an upgrade.

LiteLLM Auto Router Fusion solved 14 of 21 Terminal-Bench tasks; Claude Fable-5 on its own solved 9. Fusion runs the task on several models in parallel and has one of them synthesize the candidate work into a single answer. Both arms ran the same 21 tasks.