A groundbreaking study has demonstrated that artificial intelligence systems exhibit consistent personality patterns similar to humans when assessed through standardized psychological tests. Researchers administered personality assessments to four major AI models, discovering that each displayed unique behavioral tendencies. Claude 3 Opus emerged as highly introverted and analytical, while ChatGPT-3.5 showed more extroverted characteristics. The research utilized both Myers-Briggs-style typological assessments and Big Five personality measurements across multiple testing sessions. These findings have significant implications for the deployment of AI in healthcare settings, particularly mental health applications where personality compatibility between AI and patients could affect treatment outcomes. The study suggests that AI personality profiling should become a standard component of responsible AI deployment protocols, especially in patient-facing roles where interpersonal dynamics are crucial for therapeutic success.