Abstract: (Artificial intelligence and the crisis of alterity: between mirroring, simulation and alienation) In today's era, marked increasingly by the emergence of artificial intelligence, the concept of alterity is undergoing a fundamental transformation. Artificial intelligence is not just about performing algorithmic tasks but simulates the presence of an “other” capable of conversation, emotional reaction and contextual adaptation. However, this simulation is not based on subjectivity or consciousness, but on a technologized, artificial modeling of human responses. Thus, AI constructs a simulated otherness, void of subjective content (identity) and intentionality. From a linguistic-philosophical perspective (Humboldt, Coseriu, etc.), the linguistic act presupposes a permanent openness to otherness, since the other is always a constitutive part of the common process of meaning-making. More specifically, in the linguistic act, there is no mere transmission of content from the speaker to the listener, and the listener is not the passive recipient of information; the linguistic act involves “a double cognitive productivity” (Trabant 2014, 433), a joint production of thought, through the assumption and internalization of the other's thought. Thus, individual subjectivity is constantly confronted with otherness, with the other, which is configured within its consciousness, through this process of joint creation of meaning. Alterity is thus implicitly a dimension of subjective consciousness, reiterating the synthesis between the subjective and the objective. But this authenticity of alterity is undermined by the new form of dialogical reporting proposed by artificial intelligence. Thus, in this paper we aim to analyze the way in which AI simulates the presence of an “other”, as well as the implications and risks that this simulation entails for our understanding of the authentic concept of alterity. AI does not simply reflect a crisis of alterity but requires a redefinition of paradigms and conceptual understandings.