The model is being trained on 3D data provided by Roblox creators who opted in, the company tells PCMag. Roblox is also using open-source datasets and licensing some datasets to refine the model ...

To get around this issue, Roblox will use a second AI model that has been trained on more plentiful 2D data, pulled from open-source and licensed data sets, to check the work of the first one.