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Fable 5.1 can hide messages in images using SVG.

AIImage ProcessingData SecurityOct 22, 2026score 0.272 posts · 0 replies across 2 instances
The thread explores how Fable 5.1, a Frontier LLM, hides messages in images using SVG, and whether such messages can be successfully decoded. It compares results with GPT-6 Astra on the same task, highlighting potential capabilities of advanced LLMs in image-based communication.

Claims

Fable 5.1 can hide messages in images using SVG.
Parent: AIEntity: Fable 5.1Impact: positiveDate: Oct 22, 2026 - Oct 23, 2026Target: Fable 5.1's ability to hide messages in images
Messages hidden in images using SVG by Fable 5.1 can be successfully decoded.
Parent: Data SecurityEntity: Message hiding in imagesSub-entity: SVG-basedImpact: neutralDate: Oct 22, 2026 - Oct 23, 2026Target: Success in decoding hidden messages in images

Source posts

@[email protected]
How does Fable 5.1 hide messages in images? https://www.lesswrong.com/posts/WHEQps5PK8LrrcTAb/how-does-fable-5-1-hide-messages-in-images > Frontier LLMs are now capable of generating artistic images using SVG. We ask – if these LLMs had to hide a message in an image – how would they do so? And if they hid such messages, could they be successfully decoded? > We show interesting results from testing Fable 5.1 on these questions, and briefly compare with GPT-6 Astra on the same task. #Claude
0 boosts · 0 favs · 0 replies · Oct 22, 2026
#claude
@[email protected]
How does Fable 5.1 hide messages in images? https://www.lesswrong.com/posts/WHEQps5PK8LrrcTAb/how-does-fable-5-1-hide-messages-in-images https://news.ycombinator.com/item?id=50201445
0 boosts · 0 favs · 0 replies · Oct 23, 2026