Disclosed are a method and device for updating AI models, and a storage medium. The method is applicable to an AI server that includes a model running environment and a model training environment. An AI model deployed in the model running environment is available for a user. The method includes: acquiring business data generated by a target user in a process of using a first AI model, the first AI model being deployed in the model running environment; and updating a second AI model based on the business data, the second AI model being deployed in the model training environment, the second AI model being identical to the first AI model.