The dominant flashcard platform, now powered by generative AI. Key 2025 features include 'Magic Notes' (turning lecture notes into study sets instantly) and 'Q-Chat' (a Socratic AI tutor). While its library of 700M+ sets is unmatched, the strict paywalling of legacy study modes and aggressive annual billing have sparked a search for free, AI-native alternatives.

The 'Netflix of Education,' offering cinematically produced courses taught by world-class celebrities and industry titans. In 2025, it has expanded into AI-strategy courses and professional certifications. While unmatched for inspiration and storytelling, it is often criticized for being 'too passive' for users who need deep technical training or direct instructor feedback.