Post-Cutoff

“I wanted to test Fable 5.2’s quality with one-shot prompts without human feedback.”

Felix Rieseberg @felixriesebergX

Archived text

I wanted to test Fable 5.2’s quality with one-shot prompts without human feedback.

Everything in this game is from scratch: models, sounds, textures. ~$550 at API pricing, ~2.7M output and 445M input tokens, heavily cached. Took 8 hours!

Play it here: https://claude.ai/artifact/BGY1SztrAYcJQHSsnHHGmp

Source: x.com/felixrieseberg/status/2119925633564463609Archived 2026-11-12 via fxtwitter (unofficial).Counts: 4,276,121 views, 14,445 likes, 1,113 reposts, 822 replies (at fetch time)Media: video poster

Cited in

  1. Model releases 132 days after the cutoff

    Anthropic releases Claude Fable 5.2 and Claude Mythos 5.2