Choosing the Right AI Image Model for Your Game Art
Voidless has six image models, from 1-credit drafts to detailed hero art: what each is good at, what it costs, and which to use for sprites and pixel art.
The image generator has six models in its Model menu. They differ in detail, how closely they follow a prompt, and price. The menu shows each model's short name with its cost in brackets, for example flux2-klein [1]. Here's how we'd choose.
The lineup
| Model | Credits | Best for |
|---|---|---|
| Flux 2 Klein | 1 | Fast, cheap drafts and clean game characters. The default. |
| Flux Juggernaut | 1 | Painterly, stylised fantasy looks. |
| Seedream 5 Flash | 2 | Crisp detail and clean shapes at a low price. |
| GPT-Image 2.5 | 5 | Long, specific prompts and text in the image. |
| Retro Diffusion | 10 | True pixel art, drawn natively at sprite size. |
| Nano Banana 2.1 | 15 | The most detailed hero art and key visuals. |
Pixel art: two routes
Retro Diffusion draws pixel art natively at 32, 64 or 128 px. It has its own built-in look, so the Style and Colour Palette menus step aside when you pick it.
Any other model can make pixel art too. Pick a size of 32, 64 or 128 (the Style switches to Pixel Art for you) and set the Colours slider. The result is snapped to the pixel grid with that many colours. This route is cheaper, and it's how we'd start.
Long prompts, text and tilesets
GPT-Image 2.5 follows long, multi-part prompts best and is the model to use when the image needs readable text, such as a game title or a labelled button. The Tileset type always uses it, so the Model menu locks to it when you pick that type.
A quick decision guide
- Exploring an idea or making lots of small assets? Flux 2 Klein.
- Painterly fantasy art? Flux Juggernaut.
- Cleaner detail without a big price jump? Seedream 5 Flash.
- Text, UI labels or a prompt with many requirements? GPT-Image 2.5.
- Pixel art that looks hand-placed? Retro Diffusion.
- A key visual or hero character you'll look at a lot? Nano Banana 2.1.
Draft cheap, finish detailed
Work out the composition on a 1-credit model first. Once the prompt gives you what you want, regenerate on a more detailed model. Then keep that model for the whole asset type, so every enemy or every item matches.
Compare for yourself
The image models page runs the same prompts on all six models, one try each, so you can see the difference before you spend credits.
