AI-powered language learning app that personalizes lessons and conversational practice.

Description

Duolingo is the world's most popular language learning app that uses artificial intelligence to personalize each user's experience. Adaptive Learning adjusts difficulty based on student performance. Duolingo Max includes Explain My Answer powered by GPT-4, which explains why answers are correct or incorrect in natural language. Roleplay allows users to practice conversations with AI characters in realistic scenarios such as ordering at a restaurant or a job interview. AI Pronunciation evaluates speech with specific feedback. Birdbrain is a proprietary algorithm that optimizes what to practice based on spaced repetition. Gamification motivates users with streaks, leagues, and achievements. Supports 40+ languages. The Duolingo English Test uses AI for English certification recognized by universities. Completely free with ads or Super for a premium experience. Over 500 million users. Research shows effectiveness comparable to university courses. Mobile and web apps available.