Tiny Neural Network Playground
Class A
Class B
Click canvas to add a point (uses selected class). Background blends blue↔red by model confidence.
Controls
Select which coloured dots to place on click.
Randomly generate a preset pattern of dots.
2
Select how many layers the model has.
4
Select how many units each layer has.
32
1
0.00
0.10
(Advanced) Select which activation function to use.
0.03
(Advanced) Select the learning rate to use.
Click the plot to add points. “Auto-train” keeps iterating until you stop or loss plateaus.
Training Dashboard
Neural Network (weights & activations)
Hover over the plot above to probe activations. Blue = positive weight, Red = negative. Node fill ≈ activation strength.