If you are choosing between the Duolingo English Test and IELTS, you are choosing between two tests that measure the same thing — your English — and differ in almost everything else. This is a practical comparison, built to help you decide, not to declare a winner.
The short version
| Duolingo English Test | IELTS (Academic) | |
|---|---|---|
| Cost | ~$$70 USD | ~$245–$310 (varies by country) |
| Length | About 1 hour | About 2 hours 45 minutes |
| Where | At home, on your computer | Test centre (or IELTS Online) |
| Results in | 2 days | 3–13 days |
| Score scale | 10 to 160, in increments of 5 | 0–9 bands |
| Speaking | Recorded, AI-scored | Live examiner (or video call) |
| Validity | 2 years | 2 years |
Cost and speed: the DET's case
The Duolingo English Test costs roughly a quarter of IELTS and takes about a third of the time. You sit it at home whenever you like, and your certified result arrives within 2 days — where IELTS means booking a centre, travelling to it, and waiting up to two weeks. For an applicant sending scores to several universities on a deadline, this is the whole argument, and it is a strong one. If your aim is specifically to avoid IELTS, our guide to studying abroad without IELTS walks through every route, country by country.
The examiner question: IELTS's case
IELTS scores your speaking with a trained human examiner in a live conversation. The DET records your speech and scores it automatically. Neither is "better" in the abstract, but they suit different people: if you freeze in front of a person, the DET's private recording is easier; if you speak more naturally in a real conversation than into a microphone, IELTS plays to that. It is worth knowing which one you are before you pay.
Acceptance: the deciding factor
This is the one that actually decides it. Thousands of institutions accept the Duolingo English Test — but not all of them, and not always for every programme or visa route. IELTS has a longer history and slightly broader acceptance, especially for immigration.
Before anything else, check your specific programme's requirements. If your university lists a DET score requirement, the DET is almost always the faster, cheaper choice. If it only lists IELTS or TOEFL, the decision is made for you. Do not choose a test your destination does not accept, however convenient it is.
Scores: how they line up
The two use different scales — the DET runs 10 to 160, in increments of 5, IELTS runs 0–9 bands — but both anchor to the CEFR, so they can be compared. As a rough guide:
| CEFR | DET (approx.) | IELTS (approx.) |
|---|---|---|
| B2 | 95–120 | 5.5–6.5 |
| C1 | 120–140 | 7.0–8.0 |
| C2 | 140–160 | 8.5–9.0 |
These are approximate. Universities set their own equivalences, so a programme asking for IELTS 6.5 might list a DET requirement of 105, 110 or 115 — always use the number your specific institution publishes.
Difficulty: are they equally hard?
They test the same language, so a strong English user scores well on both. What differs is the shape of the difficulty. The DET is adaptive — it hunts for your level and packs many short, varied question types into an hour, which rewards quick task-switching. IELTS is longer and more predictable, with familiar essay and interview formats, which rewards stamina and preparation. If you have practised IELTS essays for months, that preparation does not fully transfer; the DET's formats are their own thing and need their own practice.
So which should you take?
- Take the DET if: your programme accepts it, you want a result fast and cheap, and you are comfortable speaking into a microphone at home.
- Take IELTS if: your programme or visa only accepts IELTS, or you strongly prefer a live examiner.
- Still unsure? Sit a full DET practice test first. It is free, takes an hour, and tells you your likely score before you spend anything — which is often enough to make the decision obvious.
Quick reference: Duolingo English Test vs IELTS at a glance
| Question | Answer |
|---|---|
| Which is cheaper? | The DET — about $$70 USD — roughly a quarter of IELTS. |
| Which is faster? | The DET: about an hour, taken at home, with results in a couple of days. |
| Do the same universities accept both? | Thousands accept both, but not all accept the DET — always check your programme. |
| Which has a human speaking examiner? | IELTS. The DET records and scores speaking automatically. |
| How do the scores compare? | Both map to CEFR: DET 120 is roughly IELTS 7.0 (C1), but universities set their own equivalences. |
| How do I decide? | Take a free DET practice test first; if your programme accepts the DET and your score is on target, the choice is usually clear. |
Questions people ask
How long does each test take to sit?
The Duolingo English Test runs about an hour; IELTS takes roughly two hours and forty-five minutes, with the speaking interview sometimes held on a separate day. If a single short sitting matters to you, that is a clear point for the DET.
Does the DET have separate Academic and General Training versions like IELTS?
No. IELTS splits into Academic and General Training for study versus migration, whereas the Duolingo English Test is a single test that institutions interpret for their own purpose. Confirm that your university or visa route accepts that one DET score for what you need.
If I have already prepared for IELTS, will that help on the DET?
Your underlying English carries straight over — vocabulary, reading and listening ability all transfer. The formats do not, though: the DET's quick adaptive items and real-or-fake-word tasks are unlike anything in IELTS, so rehearse the specific formats even when your English is already strong.