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MODEL COMPARISON

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

The site has 24 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

Does This Calavera Face Paint Actually Hold UpDoes This Calavera Face Paint Actually Hold UpThis Shot's Strength Is Not Telling a StoryThis Shot's Strength Is Not Telling a StoryHalf a Face Fading Into NavyHalf a Face Fading Into NavyBeach Selfies — the Cat Learned FirstBeach Selfies — the Cat Learned FirstCables Wound Into a Streak of Violet-BlueCables Wound Into a Streak of Violet-BlueA Coffee Mug Tipped Over on a Dark TableA Coffee Mug Tipped Over on a Dark Table

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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