Skip to content
Intelligibberish
  • News
  • Articles
  • Guides
  • Tools
  • About

Tag

#fable-5-1

← All articles

Tests Sep 14, 2026

Fable 5.1 Cracks a 370-Year-Old Cipher in 44 Minutes

Anthropic's Claude Fable 5.1 reportedly decoded a royalist cipher first published in 1653 using 176k tokens. The plaintext is verifiable. The framing is not.

Intelligibberish

Making sense of AI overwhelm. Independent, self-hosted, no trackers.

News Articles Guides Tools About Disclosure Privacy RSS

© 2026 Intelligibberish. Making sense of AI overwhelm.