The UPSC evaluates candidates during the interview based on several criteria, including knowledge, personality traits, and communication skills. The interview panel assesses a candidate's understanding of current affairs, ethical reasoning, and public administration principles. Additionally, candidates' ability to articulate thoughts clearly and confidently is critical. The panel looks for qualities such as integrity, adaptability, and decisiveness, which are vital for effective public service. Overall, the evaluation seeks to gauge a candidate's potential contribution to civil services beyond academic achievements.