This study uses the traditional DEA and Fuzzy DEA models to evaluate the cost efficiency of Indian private banks. This study includes 21 Indian private banks, with each serving as decision-making units (DMU). Each DMU comprises four outputs, namely investments, loans/advances, Interest earned and other income, and five inputs, including the number of workers, branches, deposits, borrowing funds, and fixed assets. The RBI's official website was used to get the information needed. Each DMU’s cost efficiency scores have been determined using both traditional and fuzzy DEA, and ranked. It is discovered that just one bank is efficient when using the fuzzy DEA approach, but two banks are efficient when using the classic DEA.AMS Subject Classification: 90C08; 93C42