GPT Image 2.5 Tops Image Arena, but Old Prompts Cause Artifacts, User Ablations Find
altryne · x · 2026-09-12
Per Artificial Analysis' Image Arena, OpenAI's new GPT Image 2.5 (Flare/Sunburst) takes the top two spots, generating higher-quality images in less than half the time of GPT Image 2 at the same price.
User altryne re-ran thumbnail ablations and confirmed GPT Image 2.5 beats Nano Banana, his previous winner — but warns that his old prompting style made GPT images "overcook" thumbnails with artifacts, so users should adjust prior prompts before judging the new model.
Related event: OpenAI's GPT-Image-2.5 Topped the Image Arena Leaderboard(4 posts)→
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