The UPSC examination differs for different states in India primarily in terms of language options and regional issues. While the exam format remains uniform, candidates can opt for regional languages in the Preliminary and Mains exams. Additionally, local social issues, culture, and political context are often reflected in the candidates' responses, which helps in evaluating their understanding of regional challenges. This regional perspective can give an edge to aspirants, making their answers more relevant and relatable in the context of their home states.