In robotics, Artificial Intelligence (AI) models are the "brains" that enable machines to perceive, understand, predict, and act within their environments. Modern robotics has moved beyond simple pre-programmed instructions, now leveraging sophisticated AI models that allow for unprecedented levels of autonomy and adaptability. This entry outlines the key categories of AI models forming the contemporary robotics stack: Foundation Vision Models, World Models, and Vision-Language-Action (VLA) models.