Jev handles agent micro-decisions, cutting Opus bill ~500%
The author routes file loading, effort level, failure recovery and test selection through Jev, calling Opus only for hard reasoning, with each Jev decision returned as a typed result the host checks.
JEV + OPUS 5.5 IS THE MOST UNDERRATED SETUP IN AI RIGHT NOW. AND NOBODY'S TALKING ABOUT IT. I stopped letting Opus make every small decision in my agents. Jev makes them now. My Opus bill dropped ~500%. Same tasks. Same results. Here's what Jev handles for me: LOAD - which files and notes to pull in before Opus sees anything EFFORT - how much thinking each task actually needs RECOVER - what to do when a tool fails TEST - which tests to run, and when to stop Opus only gets called for the hard reasoning. And nothing runs blind: every Jev decision comes back as a typed result my host checks before it executes. The biggest cost in your agent isn't the thinking. It's paying your smartest model to make the small calls. Prompt to set this up in the reply 👇