Differences between group studies and solitary study methods for UPSC primarily revolve around collaboration versus self-discipline. Group studies provide opportunities for shared resources, discussion, and diverse perspectives, making it easier to clarify doubts and enhance understanding through collaboration. However, this approach may also lead to distractions if not managed properly. In contrast, solitary study promotes self-discipline and caters to personalized learning preferences, allowing candidates to focus on their weaknesses without external influences. Balancing both methods can optimize preparation, leveraging the merits of each approach.