A Benchmark for Camera Controllability in Interactive World Models

Interactive world models increasingly require precise camera control, yet existing benchmarks rarely treat commanded motion amplitude and delivery rate as jointly controlled experimental variables, and few calibrate their pose estimator against ground truth to establish which conditions are reliable enough to score. We propose a benchmark protocol for camera controllability in world models that takes explicit continuous pose commands as input and evaluates models against a structured set of commanded trajectories: axis-pure motions across the rotational camera degrees of freedom and a null condition for measuring hallucinated ego-motion, paired with a calibrated measurement protocol that establishes when the underlying pose estimator can be trusted. We apply this protocol to two models, evaluating WorldCam across all three rotational axes and both command directions together with a null-drift test, and evaluating SANA-WM under positive yaw motion, finding that amplitude error varies with commanded angle but is non-monotonic in rotation rate, that controllability failures are scene-dependent, and that the two models exhibit qualitatively different leakage patterns despite operating under different conditioning regimes.