A Chinese startup, Sand AI, appears to be blocking certain politically sensitive images from its online video generation tool.

A China-based startup, Sand AI, has released an openly licensed, video-generating AI model that’s garnered praise from entrepreneurs like the founding director of Microsoft Research Asia, Kai-Fu Lee. But Sand AI appears to be censoring the hosted version of its model to block images that might raise the ire of Chinese regulators from the hosted version of the model, according to TechCrunch’s testing.

Earlier this week, Sand AI announced Magi-1, a model that generates videos by “autoregressively” predicting sequences of frames. The company claims the model can generate high-quality, controllable footage that captures physics more accurately than rival open models.