Duolingo

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Duolingo is a learning app for languages, chess and math, with short lessons that adapt to a learner’s level and pace. Language study covers reading, writing, listening and speaking, with speech practice, personalized review, offline lessons and a placement test among the listed tools. Challenges, reminders and game-like elements offer ways to structure practice. Duolingo says its teaching methods are research-backed and intended to develop real-world communication skills. The service lists 40 languages and is available on Android, iOS, macOS and the web. A free plan is listed, along with a 14-day trial. Other offerings include the Duolingo English Test, Duolingo for Business, Duolingo for Schools, Super Duolingo and Duolingo Max. The English Test is described as AI-enabled and can be taken wherever and whenever users perform best. FAQs and status information are available for support. Duolingo was founded in 2011 and is headquartered in Pittsburgh, Pennsylvania.

Who it is for

Duolingo suits learners looking for short, adaptive practice in languages, chess or math. Its listed Business and Schools offerings also provide options for organizations and educational settings.

What is good

Lessons adapt to learner level and pace.
Includes speech practice, review and placement testing.
Offline lessons are listed.
Covers 40 languages, plus chess and math.

What to know first

No price is listed for the one-week free trial.
Mobile app coverage is marked no in the listed coverage field.

Verdict

Duolingo combines brief, adaptive lessons with practice features across several subjects. Learners can start with the free plan and should check the trial details that apply to their chosen offering.

Compared on language learning apps

Free plan: Yesduolingo.com

Facts

Free plan: Yesinvestors.duolingo.com · 20 Sept 2026
Offline lessons: Yesinvestors.duolingo.com · 20 Sept 2026
Speech practice: Yesinvestors.duolingo.com · 20 Sept 2026
Placement test: Yesinvestors.duolingo.com · 20 Sept 2026
Personalized review: Yesinvestors.duolingo.com · 20 Sept 2026
Mobile apps: Yesinvestors.duolingo.com · 20 Sept 2026
Learning subjects: Languages, chess, and mathduolingo.com · 27 Sept 2026
Lesson format: Quick, bite-sized lessonsduolingo.com · 27 Sept 2026
Learning outcomes: Real-world communication skillsduolingo.com · 27 Sept 2026
Teaching evidence: Research-backed teaching methodsduolingo.com · 27 Sept 2026
Skills taught: Reading, writing, listening, and speakingduolingo.com · 27 Sept 2026
Motivation features: Game-like features, challenges, and remindersduolingo.com · 27 Sept 2026
Personalized learning: Lessons adapt to the learner’s level and paceduolingo.com · 27 Sept 2026
App platforms: Available on Apple App Store and Google Playduolingo.com · 27 Sept 2026
English test: Duolingo English Test is fast, affordable, and AI-enabledduolingo.com · 27 Sept 2026
Test purpose: Tests English wherever and whenever users perform bestduolingo.com · 27 Sept 2026
Business offering: Duolingo for Business is listed among the productsduolingo.com · 27 Sept 2026
School offering: Duolingo for Schools is listed among the productsduolingo.com · 27 Sept 2026
Subscription products: Super Duolingo and Duolingo Max are listedduolingo.com · 27 Sept 2026
Support channels: FAQs and status information are availableduolingo.com · 27 Sept 2026
Company positioning: Describes itself as the world’s most popular way to learnduolingo.com · 27 Sept 2026
Effectiveness claim: Says research shows its learning worksduolingo.com · 27 Sept 2026
Course languages: Offers 40 listed languagesduolingo.com · 27 Sept 2026
Deployment: cloud, mobileduolingo.com · 20 Sept 2026
Support channels: emailduolingo.com · 20 Sept 2026
Company size fit: solo, small, mid market, enterpriseduolingo.com · 20 Sept 2026