The significance of the interview phase in the overall evaluation of UPSC candidates lies in its role as a final assessment of a candidate's personality, communication skills, and suitability for public service. Unlike written exams, interviews gauge the candidate's thought processes, attitudes, and overall demeanor. It assesses qualities such as leadership, integrity, and ethical judgment. A well-rounded candidate who demonstrates confidence and articulate reasoning can significantly enhance their overall score. Thus, the interview acts as a critical differentiator among candidates with similar academic performances.