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Morning Edition · Wednesday, August 12, 2026Published at 2:11 AM EDT · New York
An Unannounced Image Model Carrying OpenAI Provenance Signals Appears in Blind Testing
Testers say images from a model listed as mona-lisa-1 on Arena are recognized by OpenAI's own verification tool, and show markedly less of the synthetic skin texture that identifies current generators.
A model labeled mona-lisa-1 has been appearing in anonymous head-to-head image comparisons on Arena. OpenAI has not announced it, published a model card, or confirmed authorship. The evidence connecting it to the company is technical: teste…
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