Today, the DET is accepted by over 4,000 institutions worldwide and has been taken by millions of test takers in over 190 countries. As per Duolingo, DET is accepted at more than 4000 institutions worldwide The DET is becoming increasingly popular as an alternative to traditional English proficiency tests like TOEFL and IELTS, as it is more accessible and affordable, and can be taken from anywhere with an internet connection. The result can be expedited to 12 hours by paying $40 extra at the time of registration.

The test is adaptive, meaning the difficulty level adjusts based on the test taker's responses, and results are available within 48 hours. The test consists of a series of interactive tasks that assess a person's ability to read, write, listen, and speak in English. The DET is designed to be taken entirely online and can be completed in approximately 60 minutes.

It was developed by the language learning platform, Duolingo, and is used by universities, employers, and other organizations to assess the English language skills of non-native speakers. The Duolingo English Test (DET) is an online English proficiency test that measures a person's ability to communicate effectively in English.

Duolingo test log in