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MODEL COMPARISON

GPT Image 1.5 vs Ideogram 4: Which One Should You Use

The site has 31 and 18 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; Ideogram 4 is better for Poster and headline typography. 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.

Ideogram 4

Poster and headline typographyGraphic design and brand visualsCharacter sheets and multi-view turnaroundsAccurate rendering of complex text
Lock the wording in quotes, then describe the type's character (sans, handwritten, serif) and the hierarchy of the layout. Don't push more than three blocks of text into one image — they start crowding each other.

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

Ideogram 4 Cases

A European Seaside Town Seen Down From a Grassy HillsideA European Seaside Town Seen Down From a Grassy HillsideThis Victorian White Gown Is a Hidden-Tier PullThis Victorian White Gown Is a Hidden-Tier PullThat Pocket Watch in the Graveyard Isn't There to Tell TimeThat Pocket Watch in the Graveyard Isn't There to Tell TimeLatex and Velvet on a Castle's Spiral StaircaseLatex and Velvet on a Castle's Spiral StaircaseAfternoon Sun on an Orange Classic Car at the BeachAfternoon Sun on an Orange Classic Car at the BeachThat Cigarette Under a Streetlamp on a Foggy London PierThat Cigarette Under a Streetlamp on a Foggy London Pier
All GPT Image 1.5 Cases All Ideogram 4 Cases
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