Aspect ratios
| Device | Aspect ratio |
|---|---|
| Phone | 9:16 |
| Tablet, portrait | 3:4 |
| Monitor | 16:9 |
| Wide monitor | 21:9 |
On KADR (kadr-ai.ru), Seedream 4.5 accepts only 16:9, 9:16, 1:1 and 4:5. For a tablet (3:4) and a wide monitor (21:9) take Seedream 5.0 Lite (also 4K, 5 tokens) or Nano Banana Pro.
For a phone: keep the top third calm (the clock and notifications are there), the main subject below the center, the edges free of important details.
For a computer: a calm area on the left for shortcuts, the main subject on the right or in the center.
Add to the prompt: «calm empty area at the top for the clock» or «empty space on the left for desktop icons».
Phone prompts (9:16)
Mountains:
Misty mountain range at sunrise, layers of blue mountains fading into fog, soft pink sky, calm empty sky at the top. Minimal, peaceful. 9:16
Minimalism:
Minimal abstract wallpaper: soft gradient from deep blue to purple with a single thin golden curve, lots of empty space. 9:16
Space:
A small astronaut sitting on the edge of the moon looking at the Earth, starry sky, calm dark space at the top. 9:16
City at night:
Rainy neon city street at night from above, reflections in puddles, glowing signs, dark calm sky at the top. 9:16
Anime landscape:
Hand-drawn anime-style landscape: a small house on a green hill under a huge sky with fluffy clouds at sunset, original artwork. 9:16
Flowers:
Close-up of soft pink peonies with water drops, dark background, shallow depth of field, elegant. 9:16
New Year:
Cozy winter night: a small wooden cabin with warm lights in a snowy forest, falling snow, northern lights in the sky, calm sky at the top. 9:16
Sea:
Turquoise sea wave from above, white foam patterns on sand, aerial view, minimal. 9:16
Desktop prompts (16:9)
Lake:
Calm mountain lake at dawn, mirror reflections, pine trees on the right, empty misty space on the left for desktop icons. 16:9
Abstraction:
Soft 3D abstract shapes floating on a pastel gradient background, smooth lighting, minimal, empty space on the left. 16:9
Space:
A colorful nebula and a distant planet with rings on the right side, deep dark space on the left. 16:9
Cozy room:
Cozy room with a large window to a rainy forest, a reading chair, warm lamp light, plants. 16:9
Pixel art:
Pixel art landscape: a small village by a river at sunset, warm colors, detailed. 16:9
Wide monitor:
Panoramic view of a desert with sand dunes under a starry night sky, Milky Way across the sky. 21:9
From your own photo:
Keep the dog from the photo recognizable. The dog sits on a hill looking at a sunset over the sea, cinematic warm light, calm sky at the top. 9:16
How to get sharpness
- Generate in 4K: Seedream 4.5, Seedream 5.0 Lite or Nano Banana Pro.
- Use 1K for drafts and 4K for the final.
- Avoid small text on wallpapers.
Aspect ratios for other tasks: aspect ratio cheat sheet.
How much it costs
| Model | Resolution | Approximately |
|---|---|---|
| Seedream 4.5 | 4K | ~8 rubles |
| Seedream 5.0 Lite | 4K, all aspect ratios | ~8 rubles |
| Nano Banana 2 Lite | 1K, draft | ~6 rubles |
| Nano Banana Pro | 4K | ~44 rubles |
KADR prices, November 2026. This is not a public offer.
In short
AI wallpapers: 9:16 for a phone, 16:9 or 21:9 for a computer, a calm area for the clock and icons, 4K for sharpness. Seedream 4.5 makes 4K wallpapers for 8 rubles; for 3:4 and 21:9 take Seedream 5.0 Lite. Describe the atmosphere and style, not characters from films and games.
