A minimal Pareto-optimal OpenRouter model router for pi, based on Jev

× I have been using pi as a coding agent with one model set as the default. That default applies the same trade-off to every task. A migration plan, a TypeScript bug, and a postmortem want different things from a model. My earlier test of reasoning levels showed how far intelligence, cost, and latency move when you change one setting. pi-jev-router moves that choice to model routing per task. A classifier says what kind of work arrived, and local code picks the route. I then benchmarked it against a fixed model. Routing is sold as a way to cut cost, and in my account it did the opposite. × How Jev classifies a task before the model call Jev is TypeSafe’s first System One model. It returns structured decisions instead of generated text. Choice picks one item from a fixed list. Score rates a state against an ordered rubric. Noul returns the probability of a yes-or-no answer. Choice and Score come back with probabilities and a confidence value. Jev accepts text and structured JSON, a…