# Seedream 4.0 (by Bytedance)
### **Overview**
Consistent, reasoning-driven text→image model with high-resolution outputs.
***
### **Quick facts**
* **Modes:** Text → Image · Image → Image (editing)
* **Outputs / sizes:** 1024×1024 (1:1), 1280×720 (16:9), 720×1280 (9:16) — higher when selecting 2K/4K
* **Aspect ratios:** 21:9, 16:9, 4:3, 3:2, 1:1, 2:3, 3:4, 9:16, 9:21
***
### **What it’s great for**
* High-detail photoreal images and editorial art.
* High-resolution asset prototyping.
* Image editing and inpainting tasks.
***
### **Example outputs**
{% hint style="info" %}
Shadow study — experimental fashion film still
{% endhint %}
{% hint style="info" %}
Cinematic character moment
{% endhint %}
{% hint style="info" %}
Detailed environment concept
{% endhint %}
#### **Copy-and-paste prompts**
```
Experimental fashion film still of a blurred shadow silhouette of a figure with long hair reaching out a hand. The body is partially obscured by tree leaf shadows cast on a white wall, captured in soft diffusion. An interior bedroom wall is bathed in hard daylight, with high-contrast backlight forming abstract silhouettes. Shot on 16mm film with a wide lens, extreme close-up low angle composition, desaturated color palette with subtle grain. The mood is hypnotic, dreamlike, and intimate, evoking trance-like disorientation and fragile presence.
```
```
Cool desaturated digital cinematography, a middle-aged Japanese man in a grey t-shirt brushes his teeth at a stainless steel sink. A towel hangs behind him, toothbrush in mouth, framed in a narrow Tokyo apartment bathroom. Artificial fluorescent side light casts cyan tones across metal surfaces, mixing with warm glow from a frosted glass window. Shot on Sony VENICE 2 with Canon K35 wide lens, medium wide clean single, centered composition, naturalistic production design with water heater and simple domestic objects. The mood is intimate and contemplative, evoking solitude and the quiet poetry of daily ritual.
```
```
Cinematic landscape film still of furrowed rows of young green crops, vast open field stretching to the horizon. Golden-hour sunset on the right edge throws long shadows and warm amber flare across desaturated earth tones and cool greens. Wide lens, very low ground-level angle with strong leading lines converging toward the sun, deep depth of field. Subtle 16mm grain, gentle halation around the sun, soft vignette. Sky in pastel lavender and peach, horizon thin and distant, mood contemplative, tender, and quietly transcendent, evoking rest after labor and a meditative union with the landscape.
```
***
### **Parameters (editor-ready)**
| Name | Type | Default | Notes |
| ----------------- | ------ | ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------- |
| `Prompt` | Text | — | Required |
| `Reference Image` | Upload | Optional | Used for edits and variations |
| `Size` | Select | Square (1:1) | Square (1:1), Landscape (16:9), Landscape (4:3), Landscape (3:2), Portrait (2:3), Portrait (3:4), Portrait (9:16), Ultra-wide (21:9), Tall (9:21) |
| `Resolution` | Select | 2K | 2K, 4K |
***
### **Modes**
| Mode | Estimated time | Required inputs | Typical use |
| ------------- | -------------- | ----------------------- | -------------------------- |
| Text → Image | \~25 seconds | Prompt | High-resolution generation |
| Image → Image | \~25 seconds | Reference Image, Prompt | Inpainting & edits |
***
### **Output options**
| Option | Values / notes |
| ------------ | --------------------------------------------------------------- |
| Aspect ratio | Square (1:1), Landscape (16:9), Portrait (9:16) |
| Resolution | 2048×2048 (Square), 2048×1152 (Landscape), 1152×2048 (Portrait) |
***
### **Prompt tips**
* Use photographic tokens for realism.
***
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.flora.ai/models/image-models/seedream-4.0-by-bytedance.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.