OpenJev runs a local decision model in your browser and reads option probabilities without decoding

OpenJev

A browser-only lab that brings Jev-style direct option-probability reading to a local model. It defaults to MiniCPM5 2B, with Qwen3 0.6B and Qwen3.5 4B as alternatives. Everything runs on your GPU; inputs never leave the page. Two paths are compared: reading choice logits directly, and asking the model to write JSON probabilities token by token. MiniCPM5 2B hits 63.7% TypeSafe accuracy, Qwen3.5 4B reaches 84.5%, both below published Jev at 88.3%. The post doesn't disclose latency numbers—only that the two methods run sequentially, direct first. Worth noting: these are quantized browser builds, so accuracy and speed differ from native BF16.