Jev Router picks models for agent tasks

Jev Router is a useful cost-control layer, but the “right tool” framing is slightly misleading: it chooses the model that answers, not the external function an agent invokes.

• –Per-request routing lets easy work use cheap models while reserving stronger models for complex reasoning.
• –The OpenAI-compatible interface makes testing it relatively low-friction.
• –Automatic fallback improves resilience but can add latency and obscure which model handled a request.
• –Developers should pin models for evaluations, reproducibility, and audited workflows.
• –The real advantage depends on traffic mix; workloads dominated by hard tasks may see limited savings.