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MODEL COMPARISON

GPT Image 1.5 vs Seedream 4.0: Which One Should You Use

The site has 31 and 22 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; Seedream 4.0 is better for Native Chinese prompt comprehension. 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.

Seedream 4.0

Native Chinese prompt comprehensionProduct and still-life photographyEveryday scenes and festive subjectsSteady composition and color
Write in Chinese directly. Naming concrete materials and light directions (frosted glass, side backlight, linen weave) works far better than adjectives like "premium feel".

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

Seedream 4.0 Cases

Bony Fingers on a Violin, Purple Smoke Through the TreesBony Fingers on a Violin, Purple Smoke Through the TreesThis Red Mug Basically Matches His CoatThis Red Mug Basically Matches His CoatEven Santa Has a Shift That DayEven Santa Has a Shift That DayThis Egg-Growing Plant Is Kind of UnsettlingThis Egg-Growing Plant Is Kind of UnsettlingThis 2026 Doorway Is Having a Good DayThis 2026 Doorway Is Having a Good DayThe Letters H and I, Made of FoamThe Letters H and I, Made of Foam
All GPT Image 1.5 Cases All Seedream 4.0 Cases
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