This paper points out that current AI-based extended reality (XR) systems are limited by the lack of user modeling and limited cognitive context, and proposes the Perspective-Aware AI in Extended Reality (PAiR) framework as a solution. PAiR is a basic framework that integrates Perspective-Aware AI (PAi) with XR to enable interpretable and context-aware experiences based on the user’s identity. PAi is built on Chronicles, an inferable identity model learned from multimodal digital footprints that capture the cognitive and experiential evolution of the user. PAiR uses these models in a closed-loop system that connects dynamic user states with immersive environments. In this paper, we describe the architecture, modules, and system flow of PAiR in detail, and demonstrate its utility through two proof-of-concept scenarios implemented in the Unity-based OpenDome engine. PAiR presents a new direction for human-AI interaction by integrating perspective-based identity models into immersive systems.