3D Scene

LOTR World Built by Claude Opus 5.5 ($252)

Layton Gott

@Layton_Gott · 3.9K followers

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Sep 25, 2026

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Layton Gott fed Opus 5.5 the first paragraph of Lord of the Rings, gave it no token cap, and let it run for hours — building out a full Middle-earth-style world from scratch. The result is a sweeping top-down aerial landscape packed with forests, rivers, settlements, and rolling terrain. Where Karpathy's Opus 5 run cost ~$10 and hit 1M tokens, this one burned through $252 with no ceiling. The difference is visible: richer geography, denser detail, and a world that actually looks like Tolkien drew it.

No token cap: Opus 5.5 ran for hours and consumed $252 of API credits to build the world
Aerial view reveals dense terrain — forests, rivers, roads, and structures all generated from a single paragraph
Direct rematch of Karpathy's Opus 5 experiment, with a visibly more detailed result

“I just reran Karpathy’s Lord of the Rings experiment with Opus 5.5... Karpathy capped Opus 5 at 1M tokens, around $10. this time I gave Opus 5.5 no token cap at all. same basic setup: > first paragraph of LOTR > let it build the world > let it run for hours and it absolutely destroyed Opus 5. the result looks WAY better. it also burned through $252 worth of tokens lol.”
— @Layton_Gott

world-building generative-ai tolkien long-context claude-opus-5-5 dark-mode 3d