GPT Image 2.5 edit guide: 9 official patterns and a drift test showing 18% vs 60% pixel change
Fun_Walk_4965 · reddit · 2026-09-10
Part 2 of a GPT Image 2.5 prompt guide compiles 9 official edit patterns from OpenAI's guide plus the author's own five-round drift test. Full prompt library on GitHub (awesome-gpt-image-2.5-prompts).
Core method: every edit prompt is two lines — what changes and what stays; anything off the keep list is fair game; number reference images and assign roles; set transparent background as a parameter, never a word in the prompt.
Drift test: on a five-round chain, 2.5 moved 18% of pixels per edit vs 60% for gpt image 2 — a major consistency gain. Patterns include text translation keeping design, style transfer, outfit swap preserving identity, two-photo compositing, and transparent cutouts (parameter handles alpha, prompt handles subject).
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