An interactive whole-universe simulator built with Opus 5.5

ChainDuck @_Chain_Duck_Originally posted 2026.10.04

Open original on X

Someone just built an interactive simulator of the entire known universe - every star, galaxy, black hole - with Claude Opus 5.5. And it runs smooth on mobile I actually opened the link and zoomed out from Earth to the edge of the observable universe. This is not a demo video, you can try this yourself: http://universesimulator.org This is the kind of "AI coding" that doesn't need marketing - it sells itself

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