A new benchmark called JevBench just dropped.

for models whose output is a bounded software decision rather than open-ended prose and follows TypeSafe’s 15 Sept release of Jev, which takes application state plus fixed choices and returns a typed answer with probabilities instead of prose.

This benchmark's score deliberately combines Intelligence, Calibration, Speed and Cost because deployment can fail even when raw accuracy is high.

e.g. GPT-5.6 Luna records substantially higher hard-case accuracy than Jev 1.13.0, yet Jev leads the composite because the benchmark also prices latency, calibration and cost.

The geometric mean prevents exceptional performance on 1 axis from fully compensating for a weak one.

The result is evidence about a narrow typed-decision workload, not evidence that Jev is generally more capable than GPT-5.6 Luna.