Fable 5.2 built an interactive 3D globe of Earth's history from one prompt, ~$550 in tokens
Chris_Brannigan · x · 2026-11-10
Two one-shot tests of Fable 5.2 went viral: one user gave a single prompt and slept; 11 hours later the agent had built a fully interactive 3D globe covering Earth's history from the Big Bang to today, with a draggable timeline and clickable deep dives. Felix Rieseberg's cited test quantifies it: no human feedback, all models/sounds/textures generated from scratch, $550 at API pricing, 2.7M output and 445M input tokens (heavily cached), 8 hours total. Playable online.
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