Rainbow Slinky Escalator Test Goes Viral, Pitting GPT Against Claude

A new "slinky test" asks AI models to animate a rainbow slinky rolling forever on an upward escalator using pure canvas in a single HTML file. The challenge went viral on Reddit and was used to compare GPT and Claude's coding and physics animation capabilities.

2026-09-05 ~ 2026-09-06 · 2 related posts

• Rainbow Slinky on an Escalator: GPT Wins on Speed, Claude Wins on Physics Realism — shniydder · 2026-09-05
• The Slinky Test: A New Coding Challenge for Local Models Using Pure Canvas — MrMrsPotts · 2026-09-06