The Two Most Popular English Proficiency Tests
If you're planning to study abroad in 2026, you've likely been told you need an English proficiency score. The two tests students ask about most are the Duolingo English Test (DET) and IELTS. But they couldn't be more different — in format, price, availability, and what universities accept them.
This comprehensive comparison will help you decide which test is right for your situation, based on your target university, budget, timeline, and test-taking preferences.
Quick Comparison at a Glance
| Factor | Duolingo English Test | IELTS |
|---|---|---|
| Cost | $49 | $245 - $255 |
| Test Duration | ~1 hour | 2 hours 45 minutes |
| Test Location | Online, from home | Test center (or computer-delivered at center) |
| Results | Within 48 hours | 3-5 days (computer) / 13 days (paper) |
| Score Range | 10-160 | Band 0-9 |
| Accepted By | 5,000+ institutions | 11,000+ institutions |
| Validity | 2 years | 2 years |
| Test Frequency | On demand (anytime) | Fixed dates (4x per month typically) |
| Sections | Adaptive (mixed skills) | Listening, Reading, Writing, Speaking |
When to Choose the Duolingo English Test
- Budget is a concern: At $49, the DET costs less than one-fifth of IELTS.
- You need results fast: Results come in 48 hours vs. up to 13 days for paper-based IELTS.
- No test center nearby: You take the DET from your computer at home.
- Your target universities accept it: Over 5,000 institutions accept the DET.
- You're applying to US universities: The DET has particularly strong acceptance among US universities.
When to Choose IELTS
- Immigration purposes: IELTS is typically required for permanent residency or visa applications.
- Maximum university acceptance: 11,000+ institutions accept IELTS.
- You prefer a structured format: IELTS has clearly defined sections you can prepare for individually.
- Face-to-face speaking assessment: IELTS Speaking is with a human examiner.
- Professional registration: Many medical and nursing bodies require IELTS.
Score Equivalency Guide
| DET Score | IELTS Band | CEFR Level | Typical Requirement |
|---|---|---|---|
| 160 | 8.5 - 9.0 | C2 | Top-tier programs |
| 130-155 | 7.0 - 8.0 | C1 | Most graduate programs |
| 110-125 | 6.0 - 6.5 | B2 | Most undergraduate programs |
| 90-105 | 5.0 - 5.5 | B1 | Foundation/pathway programs |
| Below 85 | Below 5.0 | A2-B1 | English language courses |
How to Prepare for Each Test
Preparing for the Duolingo English Test
- Take a full free practice test on PrepareBuddy to get your baseline score.
- Focus on the question types you find most challenging.
- Practice daily for 30-45 minutes with AI-scored practice.
- Pay special attention to Writing and Speaking samples — universities see them.
Preparing for IELTS
- Take a diagnostic test to identify your weakest section.
- Practice each section separately using AI-scored mock tests on PrepareBuddy.
- For Writing: practice Task 1 and Task 2 regularly with AI band-score estimates.
- For Speaking: record yourself and use AI feedback to improve.
The Bottom Line
There's no universally "better" test. The DET wins on convenience, cost, and speed. IELTS wins on universal acceptance and immigration eligibility. Your choice should be driven by what your institutions accept and your budget.
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