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OpenAI · 5 credits a picture

GPT-Image 2.5 for game art

Follows long, specific prompts, and writes text.

GPT-Image 2.5 is OpenAI’s image model. It is the best in Voidless at following a long prompt exactly, with several characters, specific details and readable text, and costs 5 credits a picture.

Like Seedream, it is asked for a transparent background, so sprites come back already cut out. Voidless also uses it for tilesets, where a precise layout matters most.

Try GPT-Image 2.5 Compare all six models
GPT-Image 2.5 example: a cyberpunk birdman warrior
Examples

What GPT-Image 2.5 makes

One try per prompt, nothing cherry-picked: the same prompts as the model comparison.

GPT-Image 2.5: a cyberpunk birdman warrior, full body (character)
Character · 512 px“a cyberpunk birdman warrior, full body”
GPT-Image 2.5: a cyberpunk birdman warrior, full body (pixel art character)
Pixel art character · 128 px pixel art“a cyberpunk birdman warrior, full body”
GPT-Image 2.5: a glowing crystal sword (item)
Item · 512 px“a glowing crystal sword”
GPT-Image 2.5: a slime monster wearing a tiny golden crown (creature)
Creature · 512 px“a slime monster wearing a tiny golden crown”
GPT-Image 2.5: an original side-scrolling platformer level, no characters: grassy floating platforms, coins, a waterfall and distant mountains, game background (platformer scene)
Platformer scene · 512 px artwork, background kept“an original side-scrolling platformer level, no characters: grassy floating platforms, coins, a waterfall and distant mountains, game background”
GPT-Image 2.5: a wooden treasure chest full of gold coins (pixel art item)
Pixel art item · 128 px pixel art“a wooden treasure chest full of gold coins”

Best for

  • Long prompts with many specific details
  • Text in the image: signs, titles, UI labels
  • Tilesets and other layouts
  • Scenes with several characters

Less suited to

  • Quick drafts (it is slower and costs more)
  • A raw, painterly look

In Voidless

Cost
5 credits a picture
Made by
OpenAI
Sizes
32, 64, 128 (pixel art), 512, 1024 px (1024 on paid plans); 16:9 for artwork
Background
Drawn transparent by the model for sprites
Prompting

Tips for GPT-Image 2.5

  • Write the prompt as full sentences; it reads all of it.
  • Put any text you want in the image in quotes: a sign reading “INN”.
  • Say what should not be there, too; it listens.
FAQ

GPT-Image 2.5: common questions

When is it worth 5 credits?

When the prompt is long or specific, or the image needs text. For a simple character, Flux 2 Klein at 1 credit is usually enough.

Why are tilesets always made with GPT-Image 2.5?

A tileset is a precise grid of tiles that must line up; it follows that layout most reliably, so Voidless uses it for tilesets whatever model is selected.

Other models

Compare with the other models

Flux 2 Klein example

Flux 2 Klein

1 credit

Fast, cheap and clean. The default for game sprites.

Flux Juggernaut example

Flux Juggernaut

1 credit

Painterly, dramatic fantasy looks for 1 credit.

Seedream 5 Flash example

Seedream 5 Flash

2 credits

Crisp detail and clean cut-outs at a low price.

Retro Diffusion example

Retro Diffusion

10 credits

Real pixel art, drawn at sprite size.

Nano Banana 2.1 example

Nano Banana 2.1

15 credits

The most detailed hero art and key visuals.

Every model is in the same prompt box. New accounts get 25 free credits, no card needed.

Try GPT-Image 2.5