What Claude Fable 5.2 Has Built Already

How did one prompt build a $550 video game in 8 hours?

And why is that the least impressive thing Claude Fable 5.2 has built since it came out on November 9?

Here is what has been built with it already:

• A first-person shooter from one prompt: 8 hours, about $550 at API pricing (Felix Rieseberg, Anthropic)
• The whole Earth as a game you can fly over and destroy (Matt Shumer)
• A voxel engine where every building breaks (Matt Shumer)
• A boat ride through 8 dreamlike worlds, playable in a browser (Kevin Ngo)
• An endless journey: 25,000 agents built over 450 worlds, all in code (Ethan Mollick)
• A video Matt Shumer says Fable made in one shot
• Three working devices from a one-paragraph prompt, each circuit board ready to manufacture in under a day (Anthropic, with Diode)
• Robot control: an arm that draws (Anthropic)
• An operating system that boots on a laptop, from an empty folder, by over 1,000 agents in eight days (Anthropic)
• Fermat's Last Theorem, formalized by 1,000 agents in 30 hours. An earlier Claude took 11 days (Anthropic)

So how? It works for days on its own, splits the job across thousands of agents, and checks its own work.

Take the project you shelved for being too big, write one clear paragraph, and let it run overnight.

Which project would you hand it first?

Clips: @felixrieseberg, @mattshumer_, @kevin_t_ngo, @_sholtodouglas and @emollick on X, and Anthropic's launch page (anthropic.com/claude-fable-and-mythos-5-2). The numbers are the builders' and Anthropic's own.