Same Ghibli 3D prompt: Gemini 4 Hydrogen clearly out-builds Opus 5
LightAppropriate624 · reddit · 2026-11-13
A Redditor re-ran the exact "Howl's Moving Castle 3D open-world single-file HTML" prompt on Gemini 4 Hydrogen (Extra High) to compare with their Claude Opus 5 (Medium) run from 4 months ago:
- Opus 5: box-stacked brick castle, flat paper-triangle peaks, single chimney smoke puff, static low-poly grass — cost $31.94 and 78% of the 5h limit
- Gemini 4 Hydrogen: 6,640 source lines → 924 KB single HTML, 0 errors; organic rounded boiler hull, luminous furnace eyes, four ball-jointed mechanical legs, roof windmill blades, chimney steam, smooth atmospheric haze and painted clouds
- Verdict: a large jump in Ghibli-style single-file 3D generation fidelity for the newer Gemini model
The post also includes the full, extremely detailed prompt (castle interiors, color-coded magic door system, story sequence, explorable areas) — a useful reference for complex 3D generation prompts.
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