Duolingo vs Quizlet

Side-by-side comparison of Duolingo and Quizlet: pricing, features, API access, and community ratings.

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	Duolingo Learn a language for free — AI-powered lessons that adapt to you Visit	Quizlet AI-powered flashcards and study tools to help you learn anything faster Visit
Category	Education & learning	Education & learning
Pricing	Freemium	Freemium
Starting price	USD 6.99/mo	USD 7.99/mo
Free tier
Audience	All audiences	All audiences
API available
Open source
Self-hostable
Model provider	OpenAI (GPT-4 for Duolingo Max features)	OpenAI
Founded	2011	2005
Headquarters	Pittsburgh, USA	San Francisco, USA
Key strengths	·Adaptive AI-powered lesson personalization ·Gamified learning with streaks, XP, and leaderboards ·40+ languages supported ·AI conversation practice (Duolingo Max)	·AI-generated flashcards and study sets from any content ·Spaced repetition and adaptive learning algorithms ·Massive library of 500M+ user-created study sets ·Multiple study modes (Learn, Match, Test, Flashcards)