The UPSC exam structure differs from other competitive exams primarily through its multi-stage format. It includes a preliminary exam, mains, and interview stages, emphasizing a comprehensive assessment of candidates' knowledge, analytical skills, and personality. While many exams focus solely on objective questions, UPSC's mains segment involves subjective answers, testing articulation and depth of understanding across diverse subjects. Furthermore, the emphasis on current affairs and the integration of General Studies topics into optional subjects creates a unique framework that requires a broad and nuanced preparation approach.