Alleged OpenAI 'Luffa V4' image model leaks on Arena, showing massive detail improvements

mark_k · x · 2026-08-04

A user discovered what appears to be OpenAI's next-generation image model (referred to as Luffa V4 or GPT Image 2.5) during blind tests on LMSYS Arena.

Compared to the existing GPT Image 2.0, the new model shows significant improvements in text accuracy, phone screen details, hand structure, and overall realism. While not yet officially confirmed, the comparison images from the Arena have sparked excitement in the community.

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