There are no visible watermarks, but model makers can use steganographic codes t... | Hacker News

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		nycdatasci 3 days ago \| parent \| context \| favorite \| on: GPT Image 1.5 There are no visible watermarks, but model makers can use steganographic codes to identify outputs from their own models.

nycdatasci 3 days ago [–]

Text-to-Image Models Leave Identifiable Signatures: Implications for Leaderboard Security

https://arxiv.org/pdf/2510.06525

encroach 3 days ago | [–]

This is true, however LMArena does employ some methods to mitigate attempts to manipulate the leaderboard, see https://openreview.net/forum?id=zf9zwCRKyP

They also control for style https://news.lmarena.ai/sentiment-control/

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