A 4B NLI model turns entailment into a game-playing primitive
OpenJev repackages Qwen3.5 into a 4B cross-encoder that scores premise-hypothesis pairs as entailment, contradiction, or neutral. The same primitive can rerank answers and grade outputs, while the repository includes zero-shot Flappy Bird and Doom harnesses that choose moves from text game states, or directly from pixels through the vision tower. That makes an unusual case for NLI as a general control interface, not just a classifier.