Newton's Cradle

A side-by-side physics simulation comparison of 12 AI models using a single prompt.

Newtons Cradle clonePlayable

Description

An interactive showcase comparing how 12 frontier AI models implement a physics-accurate Newton's Cradle in a self-contained HTML file. The test evaluates each model on momentum transfer, energy damping, and interactive mouse-dragging across various implementations from GPT-6, Claude 5.5, Gemini 3.8, and others.

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Details

Why this is interesting: A high-quality comparative look at how different frontier models handle complex physics and interactive UI in one shot.
Attributed to: @elliscrosby
Built with: GPT-6.1 Sol
Links: springprompt.com
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Tags: #simulation #physics #one-shot #html

Discovered: X
First posted: X · Oct 11, 2026
Listed: Added 2h ago
Build: Strong
Models: Strong

Prompt

Make a Newton's cradle with five balls. Drag a ball (or several) out to the side and let go; the swing should pass through the line of balls realistically, losing a little energy each time until it comes to rest.

Make it a single self-contained HTML file (inline CSS and JavaScript, no external libraries, fonts or images).

Source

Newton's Cradle

Description

How it grew

Newton's Cradle

Description

How it grew