A method for providing a vehicle AI service is provided. The method includes steps of: an AI service providing device (a) supporting an AI server to extract from a voice of a user (i) at least one of skill candidates including service categories and (ii) at least one of command candidates, to create voice analysis data, and receiving it from the AI server; and (b) (I) analyzing at least one of (i) the voice analysis data, (ii) second data created by analyzing voices of other users within a certain time, (iii) third data created by analyzing voices of the user within a particular time, and (iv) fourth data having information on context of the user, and (II) recognizing an intention included in the voice and determining a final skill and a final command matching the intention; wherein each of the data includes the skill candidates and the command candidates.