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MODEL COMPARISON

GPT Image 1.5 vs Z-Image Turbo: Which One Should You Use

The site has 31 and 3 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; Z-Image Turbo is better for Bilingual Chinese-English text rendering. 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.

Z-Image Turbo

Bilingual Chinese-English text renderingPhotoreal portraits and scenesExtremely fast generationReliable instruction following
With so few sampling steps, specificity pays. Put the frame and the subject's position at the very front and the style description after, or it will treat the style as the subject.

GPT Image 1.5 Cases

A-to-Z Literacy Poster, One Animal per LetterA-to-Z Literacy Poster, One Animal per LetterGreen-Skinned Noblewoman Faces a Lion on a Misty Forest PathGreen-Skinned Noblewoman Faces a Lion on a Misty Forest PathIvory Elf Dancing Before a Golden ArchwayIvory Elf Dancing Before a Golden ArchwayLaughing Hard, Two Little Goblins Perched on Her ShouldersLaughing Hard, Two Little Goblins Perched on Her ShouldersEyes Closed Before the Mirror, Clutching a Thin BranchEyes Closed Before the Mirror, Clutching a Thin BranchSharp Eyeliner, Baring Her Teeth at the CameraSharp Eyeliner, Baring Her Teeth at the Camera

Z-Image Turbo Cases

This Smoke Wraps Tight and Sells the ScareThis Smoke Wraps Tight and Sells the ScareA Claw Joins the Hand at the Writing DeskA Claw Joins the Hand at the Writing DeskPut This in a Product Shot and Watch the CTR ClimbPut This in a Product Shot and Watch the CTR Climb
All GPT Image 1.5 Cases All Z-Image Turbo Cases
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