AI YOU Town: Make Friends and Money with Your Digital Twin

Existing approaches to infer user traits and generate responses consistent with a persona rely on static prompting. They lack calibrated uncertainty, ignore sequential evidence, and drift during long interactions. We present AI YOU, a framework that continually updates a personality profile with 22 dimensions from conversation and embodies it in a personal digital twin. Practically, the system combines prompting, Bayesian updating, and conformal prediction for persona inference. A periodically refreshed memory anchor and cognitive memory with three layers preserve persona consistency over long interactions. Across the main results, AI YOU (i) achieves conformal coverage ranging from 0.921 to 0.976, (ii) improves uncertainty calibration and reasoning grounded in memory, and (iii) enhances persona fidelity over static prompting in role playing over 100 turns while reducing trait drift, for most evaluated backbones under adversarial settings with multiple agents. The prototype AI YOU Town initializes an imaginative twin world for future interaction. The online demo is available at https://quinnnnnne-ai-you.hf.space/{\texttt{quinnnnnne-ai-you.hf.space}}.