OpenJevX

OpenJevX is an open-weight, non-autoregressive System One decision model specialized from Laya, which uses answerdotai/ModernBERT-large plus a dynamic typed-decision head.

It accepts runtime-defined choice, score, and noul questions and returns calibrated probabilities in one forward pass. It is compatible with the TypeSafe Jev /v1/systemone request shape through the OpenJevX server.

Benchmark

• Typed-decisions accuracy: 0.774
• Choice: 0.745
• Score: 0.731
• Noul: 0.860
• GPU: NVIDIA GeForce RTX 4090
• CUDA p50 latency per five-question case: 22.8 ms

The benchmark uses the untouched 400-case, 2,000-decision test split from LocalLLaMA/typed-decisions. Training uses only its 1,200-case train split.

Attribution

OpenJevX is a derivative of Laya by ConvAI Innovations and ModernBERT by Answer.AI and LightOn. Laya and ModernBERT are Apache-2.0 licensed.