Methods and devices for controlling generation of an AI message in a vehicle are described. According to one embodiment, a method comprises determining generation of an AI message related to a vehicle during a driving process of the vehicle, determining a cognitive load level of a driver of the vehicle by using information related to the vehicle, determining a generation manner of the AI message based on the cognitive load level of the driver, and generating the AI message in accordance with the generation manner of the AI message, wherein the generation manner of the AI message decreases a length of the AI message as the cognitive load level of the driver increases.
