In Post 1 I covered the broad architecture. In Post 2 I went deep on the co-determination matrix and Sentinel. This post is the third piece: the Autorouter. The Autorouter answers a deceptively simple question: when a request needs cloud, which cloud model should handle it? Most platforms solve this with either a dropdown menu (pick your model) or a lightweight LLM classifier that reads the prompt and decides where to send it. Both approaches have real costs. The dropdown puts the decision on the developer. The classifier adds a serial dependency: you pay latency and tokens before the actual work starts. Rada does neither. The Autorouter is a pure Rust function. It pattern-matches on a handful of signals and resolves a cloud tier in sub-millisecond time. The decision is made before the HTTP request leaves your machine.…