Compare Image To Wallpaper Tools

Task 1: Turn an old anime image into a 4K wallpaper

Text Prompt: as a cool wallpaper
Input Image:

Image Size: Wide, 4K output

Google Nano Banana Pro
Cost: 350 ACP
Image Size: 5504x3072
File Type: .png

OpenAI Image 2
Cost: 300 ACP
Image Size: 3840x2160
File Type: .png

Bytedance Seedream 4
Cost: 40 ACP
Image Size: 4096x2304
File Type: .jpg

Google Gemini 2.5 Flash
Cost: 250 ACP
Image Size: 4344x2472 (1344x768 upscaled twice)
File Type: .png