Nano Banana 2.1 vs GPT Image 2.5: 20-prompt test scored on adherence, aesthetics, composition

techhalla · x · 2026-10-07

Just 6 hours after Google launched Nano Banana 2.1, techhalla runs a 20-prompt head-to-head against GPT Image 2.5 on Magnific, scored on three dimensions: prompt adherence, aesthetics, and composition. The first four prompts are shared in images and ALTs for anyone to copy. Later posts break down results round by round.

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