DETPractice

freemium

All-in-one Duolingo English Test preparation platform

79.9k monthly visits

free version available

Language Learning Exam Preparation

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DETPractice is a comprehensive online platform designed to help users prepare for the Duolingo English Test (DET). It offers the largest question bank with over 18,000 practice questions, full-length mock tests that closely simulate the real exam, and AI-powered scoring and correction for speaking and writing sections. The platform also provides detailed courses and an AI tutor to assist with grammar, translation, and content generation. As a Platinum Partner of the Duolingo English Test, DETPractice aims to provide accurate and up-to-date preparation materials. Key features include AI scoring for Read Aloud, Writing AI Correction, Speaking AI Correction, and adaptive mock exams with results in 1-5 minutes. The platform is used by over 400,000 users and has a rating of 4.8/5 from over 1850 reviews.

Key Benefits

Largest question bank of any DET prep platform
Accurate AI scoring for speaking and writing
Mock tests closely mirror the real DET exam
Comprehensive resources including courses and AI tutor

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Read insightful stories, practical guides, and expert perspectives on artificial intelligence, emerging technologies, and the ideas shaping tomorrow.

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GPT-Live-1 in the API: Build Natural Full-Duplex Voice Agents (What Changed)

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Featured image for ChatGPT for Financial Services: What Bankers Get Beyond Work

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ChatGPT for Financial Services: What Bankers Get Beyond Work

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OpenAI Agents API public beta (Sep 10, 2026): sessions on /v1/agents/sessions, openai_hosted vs self_hosted, container rates, security defaults, and when to use ChatGPT Work or GPT-Live-1 instead.

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Featured image for DeepSeek V4.1 Flash Isn't a Point Release: What Changed + the Sept 14 Routing Checklist

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DeepSeek V4.1 Flash Isn't a Point Release: What Changed + the Sept 14 Routing Checklist

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Our Blog

GPT-Live-1 in the API: Build Natural Full-Duplex Voice Agents (What Changed)

ChatGPT for Financial Services: What Bankers Get Beyond Work

OpenAI Agents API Explained: Build a Cloud Agent With Hosted Sandboxes

DeepSeek V4.1 Flash Isn't a Point Release: What Changed + the Sept 14 Routing Checklist