Duolingo
Free tierLearn a language for free — AI-powered lessons that adapt to you
Free tier available·All audiences·Powered by OpenAI (GPT-4 for Duolingo Max features)
Key strengths
Adaptive AI-powered lesson personalizationGamified learning with streaks, XP, and leaderboards40+ languages supportedAI conversation practice (Duolingo Max)Bite-sized lessons optimized for habit formation
Free tier + paid plans · from $6.99 USD/mo
Pittsburgh, USA
Founded 2011
Facts verified against duolingo.com on
Recent changes
- Plans updated: Free tier available; paid tier called 'Super Duolingo' with a 1-week free trial mentioned. No specific pricing figures stated in sources.
Get alerts when Duolingo changes
Free. We'll email you when pricing, the free tier, API access or open-source status changes.
No ratings yet
Use Cases – Developer & Technical Perspective
- EdTech benchmarking: Duolingo's AI-personalized, research-backed lesson engine makes it a strong reference point for adaptive learning system design.
- Mobile-first learning deployment: With native Android and iOS apps, Duolingo demonstrates a scalable mobile delivery model for gamified microlearning content.
- Multi-domain content architecture: The platform's ability to span languages, chess, and math under a single app framework is relevant for teams designing multi-subject learning products.
- Freemium conversion modeling: The free-tier + Super Duolingo subscription structure (with a 1-week free trial) serves as a case study in freemium monetization for consumer EdTech.
- Proficiency assessment integration: The Duolingo English Test illustrates how a consumer learning platform can extend into formal credentialing and assessment.
Alternatives
See all alternatives