About ExplAIn
Most explanations of AI stop at a diagram. You read that a network “adjusts its weights” or that attention “focuses on relevant words”, nod along, and never see it happen. ExplAIn exists to close that gap.
Every one of the 25 labs runs the real algorithm in your browser: K-means actually iterates, A* actually expands nodes, the neural network on the home page actually backpropagates. The 34 lessons explain the idea first, then hand you a demo to test it, then tell you what to remember.
What to expect
Lessons follow the same rhythm: what the idea is, how it works, why it matters, something to try, and three takeaways. Quizzes ask you to apply what you learned to a new situation rather than repeat a definition. Where a demo is simplified or simulated, it says so.
Privacy
There are no accounts. Your progress lives in your browser’s local storage and never leaves your device. The object detection lab downloads a model and can use your camera; frames are processed locally and are not uploaded.
Where to start
New to the subject? Begin with AI Fundamentals and follow the Foundations path. Already comfortable? Open the topic map and go straight to what interests you.