Routing is a discipline, not a feature.

Where this came from.

We came up doing network engineering — the unglamorous kind, where a route table is a real artefact, a failover path is something you test on a Sunday, and nobody gets credit when it works. That work teaches one habit above all others: decide where traffic goes before the traffic arrives, and write the decision down somewhere a colleague can read it at three in the morning.

When model calls started showing up inside the systems we were already running, they arrived with none of that discipline. Every call went to the largest available model because that was the default in the client library. There was no policy, no fallback, no verification, and no record of why any particular request cost what it cost. It was the least engineered traffic in the building, and it was the fastest-growing line on the invoice.

So we pointed the old habits at the new payload. Classify the request. Price it against a policy. Send it down the cheapest path that can actually do the job. Verify what comes back. Escalate only when the evidence says so. Today GhostRouter runs as the brain of client agents — every request their systems make passes through a policy they can read, audit and change. Most of them do not think about us from one month to the next, which we consider the whole job.