What you’re watching
This page trains a 2 – 10 – 14 – 1 neural net (199 trainable weights + biases) on the XOR truth table purely in your browser.
- Baby Mode — stylised human-brain outline with bubbles whose brightness + size track the real activations each frame.
- Advanced Mode — exact graph view; edges that grew flash green, edges that shrank flash orange; overlay shows input → target → output → loss.
No external libraries, no WebGL — just vanilla JS running slowly so you can see the learning.