Platinum Partner of the GPN

Best Mock Test for the Duolingo English Test

Arno's DET mock test is full-length, gives you instant estimated scores with subscores, and provides detailed AI feedback on every response. Your first mock test is completely free.

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Accurate Scoring

Instant Results

Detailed Score Report

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Duolingo English Test

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Proven Results

Proven Results from Students Worldwide

Arno is a Platinum Tier (highest-tier) member of the Duolingo Global Partner Network. Over 250,000 students worldwide have trusted Arno to help them get ready for the Duolingo English Test.

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250,000+

students

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200+

countries

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23,000,000+

practice questions solved

Industry-Leading Technology

The Best DET Mock Tests

Arno's mock tests are the best because our scoring is the most accurate, our full mock test is exactly like the real test, and we give you subscores and a detailed Score Report that shows you exactly where to improve.

🎯Best-in-Class Accuracy

The Most Accurate Scoring

We use the most powerful AI models from OpenAI and Anthropic trained on thousands of real Duolingo English Tests, making our scoring more accurate than any other platforms'.

📊Detailed Scoring

Precise Subscores

Unlike the official mock test, Arno's gives you subscores, showing you where you are strong and where you need to focus so that you can more quickly raise your score.

🔎Full Score Report

Feedback on Every Response

In your detailed Score Report, see which questions you got correct and incorrect. You also get scores and detailed feedback on individual writing and speaking questions.

🧐Identify Weaknesses

Compare Your Performance to Others

See how other students at your level did on specific questions. That way, you can see where you did better for someone at your level and which questions you should've done better on.

⏱️Mini Mock Tests

Full-Length and Mini Mock Tests

You can take a full mock test that is just like the real DET — or, to save time, you can take mock tests that focus on one of the four subscores: Reading, Listening, Writing, and Speaking.

📈Improve Faster

Personalized Study Plans

After you take an Arno mock test, we will build you a personalized Daily Study Plan that will pick the right lessons and practice questions for you, ensuring you gain points as fast as possible.

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Why Arno is Better

Compare Arno to Other DET Practice Test Platforms

See how Arno's mock test compares to the official Duolingo practice test and other DET preparation websites and apps.

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Duolingo English Test (DET) prep platforms: feature comparison
Feature	Arno ⭐	Duolingo (Official Practice Test)Duolingo	DET PracticeDET Practice	Lume
Full-length mock test	✅ Yes	❌ No	✅ Yes	✅ Yes
Matches real DET format & timing	✅ Yes	✅ Yes	⚠️ Partial	⚠️ Partial
Instant overall score estimate	✅ Yes	✅ Yes	✅ Yes	✅ Yes
Subscore breakdown (Reading, Listening, Speaking, Writing)	✅ Yes	❌ No	✅ Yes	⚠️ Partial
Speaking & writing feedback	✅ Detailed AI feedback	❌ No feedback	⚠️ Basic AI feedback	⚠️ Basic AI feedback
Unlimited retakes	✅ Yes (with plans)	✅ Yes	⚠️ Limited by plan	⚠️ Limited by plan
Questions updated regularly	✅ Yes	✅ Yes	⚠️ Unclear frequency	⚠️ Unclear frequency
Official Duolingo partnership	✅ Platinum Tier Member (Highest Tier)	✅ Official owner	⚠️ Platinum Tier Member	❌ No
Free option available	✅ Yes	✅ Yes	❌ No	❌ No
Best for	Serious score improvement & realistic practice	Free practice	Purchasing individual mock tests	Casual practice & feedback

Frequently Asked Questions

Is this an official Duolingo practice test?

I took Duolingo's own practice test. What's different?

How close is Arno's scoring to the real DET?

How long does the practice test take?

What question types are included?

What do I get after finishing?

How often are questions updated?

Can I retake it multiple times?

Is my writing/speaking reviewed by AI or humans?

What is the best mock test for the Duolingo English Test?

How do I get a free Duolingo English Test mock test?

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Does the DET mock test include speaking and writing?

Student Success

Real Student Success

Students around the world have trusted Arno to get their dream scores.

Arno is exactly what I was looking for; it's been a total game changer in my DET preparation. All the available questions, mock tests and the invaluable feedback it provides really prepared me to do my best on the test. I highly recommend it!!!

Alexia

🇵🇪 Peru

Arno helped me quickly improve my Duolingo English Test score, which was essential for my dream of becoming a master's degree student in the US. Also, Arno is one of the most useful and impressive AI app implementations I've ever encountered.

Erik

🇵🇾 Paraguay

Before using Arno, I was stuck at 120-130 in my DET practice, struggling with writing. Arno's AI feedback was a game changer, helping me refine my skills. Thanks to Arno, I achieved a 140 on my actual DET. Highly recommend!

Sami

🇵🇰 Pakistan

Sincerely thanks for your dedicated efforts for such an incredibly useful website and the instant feedback feature that helped me prepare for the DET very effectively in the limited time. Purchasing credits for instant feedback is a smart move and also a worthy investment.

Buabucha

🇹🇭 Thailand

It was a wonderful experience to practice for my Duolingo exam with Arno. Not only did it help me improve my score from 100-110 to 120-130 on Duolingo's practice test, but I also learned how to enhance my word selection in the writing and speaking sections through AI-based instructions from Arno.

Basira

🇦🇫 Afghanistan

I was hitting a wall with my speaking and production scores —then came Arno's website. In just 1.5 weeks of practice, I skyrocketed to a 130 in both scores. Huge thanks to Arno for making such an amazing, game-changing platform!!!

Ilsa

🇵🇰 Pakistan

I was so desperate when I found Arno. I had taken the Duolingo English Test three times already. I practiced with Arno for two weeks and I finally passed it with 135 overall score and 105 Production score! I am so grateful, thank you Arno!

Beste

🇹🇷 Turkey

Thank you so much for your versatile platform and valuable pieces of advice...Your platform has the right balance of free and paid features and is much more sophisticated.