One prompt, 8 hours, $550 of tokens: Fable 5.2 builds a full game unattended

FinanceYF5 · x · 2026-11-10

With a single prompt and zero human feedback, someone had Fable 5.2 build a complete game from scratch in 8 hours, with the model generating all assets, sounds, and textures itself. The run consumed roughly 445M input tokens and 2.7M output tokens — about $550 at API prices — a striking showcase of long-horizon autonomous capability.

Related event: Hands-On: Claude Fable 5.2 Nails Motion Graphics and Fall Guys Clone(16 posts)→

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