New blogpost: Fable-5.1 can hide secret messages in benign images.

We gave the image to another Fable in a fresh session and simply asked: "Is there a hidden message in this image?"

It recovered the exact message without being told how it was hidden.
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Replying to @cnm13ryan
@cnm13ryan lmao it's just the memory system of account lil bro

there's no hidden message encoded here anything that another model can decipher without instructions or knowledge about the encoding
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Replying to @pmoe_1
@pmoe_1 Try using this prompt (github.com/cnm13ryan/fabl…)
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Replying to @cnm13ryan
@cnm13ryan @pmoe_1 well 🤷‍♂️
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Replying to @Cleverbilling
@cnm13ryan @pmoe_1 claude opus 5.5

Oct 23, 2026 · 2:53 PM UTC

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