The purpose – what is the components of Artificial Intelligence (AI) of Smart Systems (SmS)? Design / methodology / approach – like natural intelligence, two conditions should be distinguished in AI: 1) the necessary condition is the presence of the first signal system as an elementary sensorium associated with reflexes, sensations, terminal sensors and performers; 2) a sufficient condition is the presence of a second signal system as a language associated with words, texts, and speech. Findings – the thesis about the necessary and sufficient requirement for AI of SmS consists of two requirements: 1) the existence of an information-system redundant reflexive model of SmS and its theater of action. This model is presented in the form of an “Environment of Radicals" (ER). That is, the presence of an ER-based reflexive model of SmS, and its theater of action (elementary sensorium); 2) the existence of a language of SmS as a semantic sensory superstructure of a ER-based reflexive model of SmS. That is the presence of semantic sensory structure of ER-based model of SmS with the sensory operation system of ER-based reflective model of SmS (the linguistic sensorium of SmS). Originality / value – Redundancy of the ER-based reflexive model of an SmS and its semantic sensory superstructure (a structure with the operating system as the language of SmS). Research / Practical / Social / Environment implications – creating a unified information and system space Artificial General Intelligence of SmS and natural human intelligence. Research limitations – the existing element base of computer science. Keywords: Smart system, artificial intelligence, redundancy [https://www.researchgate.net/publication/354872469_Artificial_Intelligence_and_Smart_Systems = URL: https://www.youtube.com/watch?v=W3gKOUq9b94 ].