About 1 hour
Introduction and onboarding, the adaptive test, then writing and speaking samples.
DET Ready Desk
Putting the source-backed checks in order…
DET Ready Desk
Putting the source-backed checks in order…
01 · Format · checked 3 August 2026
The DET takes about one uninterrupted hour. Its difficulty and length adapt, so the sequence you receive is not a fixed paper that Koydo can reproduce.
Introduction and onboarding, the adaptive test, then writing and speaking samples.
Some task difficulty changes as the test estimates your English proficiency.
The number of tasks can vary with the grading engine's confidence in the estimate.
Current official frequency ranges
Frequencies are ranges because the test adapts. Use this as an orientation map, then use the official practice test to experience the interaction design.
| Task type | Frequency |
|---|---|
| Read and Select | 15–18 |
| Fill in the Blanks | 6–9 |
| Read and Complete | 3–6 |
| Listen and Type | 6–9 |
| Interactive Reading | 2 sets of 6 |
| Interactive Listening | 2 sets of 8–10 |
| Write About the Photo | 3 |
| Interactive Writing | 1 set of 2 |
| Speak About the Photo | 1 |
| Read, Then Speak | 1 |
| Interactive Speaking | 1 set of 6–8 |
| Writing Sample | 1 |
| Speaking Sample | 1 |
The honest handoff
Koydo does not publish copied tasks or imitate a calibrated adaptive score. Duolingo's practice surface owns that job.