Last updated July 23, 2026
DETPractice AI is an AI-powered Duolingo English Test (DET) preparation platform designed to help students improve their English proficiency and achieve higher test scores. As a Platinum Partner for the Duolingo English Test, DETPractice offers 18,000+ practice questions, full-length adaptive mock exams, AI-powered speaking and writing evaluations, personalized study plans, and detailed performance reports.
Whether you’re preparing for university admissions, scholarships, or visa requirements, DETPractice combines realistic exam simulations with AI scoring to help you practice efficiently and build confidence before your official DET exam.
Practice for every section of the Duolingo English Test with AI-generated feedback, accurate scoring, and personalized recommendations.
Access one of the largest DET question banks with continuously updated practice materials covering all exam formats.
Take adaptive mock exams that closely replicate the real Duolingo English Test experience with instant score reports.
Receive instant AI feedback on pronunciation, fluency, vocabulary, grammar, and overall speaking performance.
Improve your writing with AI-powered grammar corrections, detailed explanations, scoring, and teacher-guided suggestions.
Get fast score predictions with comprehensive performance analysis to identify strengths and areas for improvement.
Follow customized learning paths based on your current English level and target DET score.
Learn from model responses and detailed explanations to understand what examiners expect.
Access vocabulary builders, exam guides, speaking tutorials, writing lessons, and complete DET preparation courses.
Receive AI evaluation reports within minutes after completing mock tests, writing tasks, or speaking exercises.
Use the built-in AI assistant to clarify difficult questions, understand grammar concepts, and improve your answers.
Trusted by over 400,000 learners and recognized as a Platinum Partner for Duolingo English Test preparation.
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