During the UPSC interview, panels look for various qualities in candidates, such as communication skills, confidence, and critical thinking. Aspirants are assessed on their ability to articulate their thoughts clearly and respond to questions thoughtfully. Additionally, the panel evaluates a candidate's awareness of current affairs, ethical considerations, and their approach to problem-solving. Overall, demonstrating a balanced personality, along with a genuine interest in public service, is crucial for making a positive impression during interviews.