Same creative brief, 3 models, 3 refinement rounds — what changed in the prompts?
I ran the same campaign brief through three frontier image models across three rounds of refinement — and ended up learning more from the prompt deltas than from the final images. Instead of picking one model upfront, I sent the brief in parallel to: GPT Image 2.5 Sunburst (×3) GPT Image 2.5 Flare…
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- 2026-09-27 23:47 · r/PromptEngineering
Same creative brief, 3 models, 3 refinement rounds — what changed in the prompts?