Brilliant was founded in 2012 by Sue Khim and a group of academics who believed that the best way to learn quantitative subjects isn’t through passive lectures but through active problem-solving. The platform takes a hands-on, interactive approach to teaching math, science, data analysis, and computer science fundamentals.
Instead of videos, Brilliant uses interactive lessons built around sequences of carefully designed problems. Each concept is introduced through visual, explorable examples — you might drag sliders to see how changing variables affects a graph, or step through an algorithm animation. The difficulty ramps up gradually, and wrong answers come with helpful explanations rather than just a red X.
The platform covers topics from basic algebra and geometry through calculus, probability, neural networks, quantum computing, and more. Content is organized into courses and daily challenges. The daily challenges have been particularly effective at building a habit of learning — millions of users return to Brilliant each day for a quick mental workout.
Brilliant operates on a freemium model, with some courses and daily challenges available for free and full access requiring a Premium subscription. The platform has grown to over 13 million users and is popular among students, professionals, and lifelong learners who enjoy the puzzle-like approach to STEM topics. It’s a refreshing alternative to the video-lecture format that dominates most of EdTech.
