One-shot prompt builds a full game in 8 hours for ~$550 of Claude API tokens
felixrieseberg · x · 2026-11-10
Developer felixrieseberg tested Claude Fable 5.2 with a single one-shot prompt and no human feedback. Everything in the resulting game — models, sounds, textures — was generated from scratch, costing about $550 at API pricing (2.7M output and 445M input tokens, heavily cached) and taking 8 hours. The playable game is available online, showcasing how far one-shot autonomous generation from frontier models has come.
Related event: One-Shot Prompt Gets Claude Fable 5.2 to Build a Complete 3D Game(3 posts)→
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