The preference for the Duolingo English Test (DET) over the TOEFL or IELTS depends on several factors and varies by institution. While the DET has gained acceptance as an alternative language proficiency test, its suitability hinges on the specific requirements of the program or organization you are applying to. Some institutions have started accepting the DET, especially during the COVID-19 pandemic when remote testing became more prevalent. However, not all institutions recognize it, so applicants must thoroughly research the language proficiency test requirements of their target institutions. 

The DET offers several advantages, including its online and remote testing format, which can be more convenient for some test-takers. Additionally, it assesses multiple language skills, including reading, listening, speaking, and writing. However, the scoring system for the DET differs from that of the TOEFL and IELTS, so applicants must understand how their DET scores correspond to their language proficiency level and the institution's requirements. It's also crucial to consider factors like test validity periods and the cost and accessibility of each test when making a decision. 

Thus, the preference for the Duolingo English Test as an alternative to the TOEFL or IELTS depends on individual circumstances and the specific admission requirements of the institution you are applying to. Applicants should thoroughly research and confirm the test requirements for their chosen destination to ensure they meet the criteria and can select the most suitable test for their needs. 

To know the list of universities or schools accepting DET, refer to