Language proficiency significantly impacts UPSC exam performance, as it influences comprehension and expression. A strong command over English or regional languages aids in understanding question papers and articulating well-structured responses. Clear communication of ideas improves answer quality, showcasing analytical skills effectively. Furthermore, proficiency in technical terms and jargon can provide candidates an edge in specific subjects. Regular practice through writing essays, summarizing articles, and engaging in discussions can enhance language skills, ultimately leading to better performance in both the preliminary and mains exams.