MODEL COMPARISON

GPT Image 1.5 vs GPT Image 2.5: Which One Should You Use

The site has 31 and 1707 reproducible cases for each, respectively. Below, we compare strengths, prompt writing, and final results side by side.

The Bottom Line

GPT Image 1.5 is better for Preserving faces and logos through edits; GPT Image 2.5 is better for Executing long paragraph-length scene descriptions. Running the same idea through both is usually worth it — they "listen" differently, so the prompt has to be adjusted to match.

Strengths & Prompt-Writing Comparison

GPT Image 1.5

Preserving faces and logos through editsRendering dense in-image textPhotographic texture and material feelFollowing long, paragraph-length instructions

It responds to a complete scene description: state the frame, camera position, lighting and materials in separate sentences instead of piling on style words. When editing, say explicitly "change only X, leave everything else as is" — that is where its preservation strength shows.

GPT Image 2.5

Executing long paragraph-length scene descriptionsFine gradation in materials and lightingStable letterforms for in-image text and layoutProduct and still-life texture fidelity

Split the frame into four blocks - subject, environment, light, camera - and write each separately; that works far better than piling on style words. It is also more reliable than the previous version at local edits phrased as "change only this one thing, leave the rest alone".