OpenRouter launches Jev Router, a cache-aware router that scores prompt difficulty to pick models
kalyan_kpl · x · 2026-09-26
OpenRouter has launched Jev Router, a cache-aware model router powered by Jev that automatically selects the best model and reasoning effort per request, balancing quality, speed, and cost.
How it works: Jev Router runs on Jev, TypeSafe's first "Decision / System One" model. Before each turn, Jev reads the prompt and scores it on difficulty and precision, checks whether a bigger model or more reasoning effort would help, whether a cheaper model suffices, and whether the task has changed.
Privacy: it runs under zero data retention (ZDR) terms — nothing is stored or trained on, attachments are never sent to Jev, and requests with "zdr: true" remain compatible.
Related event: OpenRouter Open-Sources Cache-Aware Jev Router(3 posts)→
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