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Good practice

Duolingo — AI-personalised language learning

United States of America · Pittsburgh · See the United States of America profile

The world's largest language app (40M+ daily users) uses AI to personalise practice and, via Duolingo Max, GPT-powered roleplay and feedback; efficacy studies are positive but largely self-reported.

40 million+
Daily active users (2024)
90%+
AI-tool users who felt ready to use the language in real life
Duolingo — AI-personalised language learning

Details

Maturity
Established
Promoter
Duolingo
Keywords
Personalised learning & tutoring, consumer, gamification, generative AI, language learning

Context

Duolingo is a language-learning platform that personalises practice with machine learning; through Duolingo Max it adds GPT-powered conversation practice and explanations, and it passed 40 million daily active users in 2024.

Results

A university study found significant gains across all four language skills after three months of use, and over 90% of Duolingo Max (AI-tool) users reported feeling ready to use the language in real life. Most of this evidence, however, is vendor-run or self-reported, and the richest AI-driven features sit behind a paywall.

Conclusions

Duolingo is cited as a strong example of AI personalisation at consumer scale, scored with the caveat that its evidence base is largely vendor-run or self-reported.

Implementation

Implementation detail (cost, timeline, staffing, conditions for success) is not yet available for this practice.

Data sources

Where this practice's information was retrieved from, and when.

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