Swapping the agent decision layer for Jev cut costs from $850 to $0.20
In a seven-day test, Claude only drafted while Jev chose from code-generated options and code kept the final say, cutting the cost of 1,000 decisions from hundreds of dollars to a few cents.
JEV + FRONTIER LLM = 10X LOWER COSTS I tested my agentic system to see if and where I can implement Jev After I finished 7 days test, the results shocked me: $850 in tokens spent on decision making, when with Jev it would cost me <$0.20 So I upgraded my system: > Claude drafts. > A decide layer picks from a code-built menu. > Code keeps the final say. > Every step writes a receipt. In the writeup they clocked ~1,000 cold frontier decisions at a mid-hundreds bill. Same thousand through the harness lands in the low-cents range. How the spend dies: ➔ Plans and patches only from the big model ➔ Illegal routes cut in code before any pick ➔ Decide layer answers or abstains ➔ Live state revalidates, then the tool runs under your normal approval Steal without copying their stack: ➔ One checkable decision per step ➔ Options prepared in code, not chat vibes ➔ A written path for "not sure" ➔ Logs you can replay when policy changes The engineer who can show that collapse in a room designs the next system. Model writes. Layer chooses. Code executes.
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