Quizlet is a San Francisco-based education technology company founded in 2005 by Andrew Sutherland, who built the first version at age 15 to help himself memorise French vocabulary. What began as a personal flashcard tool has since grown into one of the world's largest online learning platforms, serving tens of millions of students every month and generating over 2 billion learning interactions monthly.
The platform combines cognitive science and machine learning to provide personalised study tools - including flashcards, practice quizzes, and AI-powered learning experiences - to students, teachers, professionals, and lifelong learners. Its reach in the United States is substantial: two-thirds of U.S. high schoolers and half of U.S. college students use the platform. Quizlet operates on a freemium model, with revenue drawn from paid subscriptions and advertising.
The company's technical focus spans machine learning, AI-powered personalisation, and the application of cognitive science to learning at scale. Its engineering and product work is oriented around building tools that adapt to individual learners across a wide range of subjects and use cases - from K-12 classrooms to professional development.
Quizlet is headquartered in San Francisco and describes itself as a growing team with a stated commitment to accessibility and a belief that anyone can learn anything with the right tools and guidance.
