> ## Documentation Index
> Fetch the complete documentation index at: https://docs.anyfast.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Seedream 5.0 Pro
> ByteDance Seedream 5.0 Pro image generation and editing model with precise local control.
Seedream 5.0 Pro is ByteDance's high-precision image generation and editing model, available through the AnyFast API. Use it for text-to-image, single-image editing, multi-reference image generation, and local edits that need explicit position or element control.
Use model ID `doubao-seedream-5-0-pro`.
## Key capabilities
* **Text-to-image** — Generate one image from a text prompt.
* **Image-to-image** — Pass one reference image with a prompt to edit or regenerate an image.
* **Multi-reference image generation** — Pass up to 10 reference images with a prompt.
* **Interactive editing** — Use natural language, marked regions, points, bounding boxes, arrows, or annotations to control where edits happen.
* **Native multilingual text** — Generate text in languages such as Russian, Arabic, Filipino, Thai, Turkish, Korean, Malay, Spanish, Portuguese, Indonesian, French, German, Vietnamese, and Japanese.
* **Output control** — Use `size`, `response_format`, `output_format`, and `watermark` to control the generated image.
Seedream 5.0 Pro does not support grouped image generation, web search, or streaming output. Do not rely on `sequential_image_generation`, `sequential_image_generation_options`, `tools`, or `stream` with this model.
## Quick examples
```bash cURL theme={null}
curl https://www.anyfast.ai/v1/images/generations \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "doubao-seedream-5-0-pro",
"prompt": "A high-end product hero image for a smart speaker, precise lighting, clean editorial layout, multilingual label text in Japanese and English",
"size": "2K",
"output_format": "png",
"watermark": false
}'
```
```python Python theme={null}
import requests
response = requests.post(
"https://www.anyfast.ai/v1/images/generations",
headers={
"Authorization": "Bearer YOUR_API_KEY",
"Content-Type": "application/json",
},
json={
"model": "doubao-seedream-5-0-pro",
"prompt": "A high-end product hero image for a smart speaker, precise lighting, clean editorial layout, multilingual label text in Japanese and English",
"size": "2K",
"output_format": "png",
"watermark": False,
},
)
print(response.json())
```
## Image editing
Pass `image` as a URL, a Base64 data URI, or an array of image URLs/data URIs. Seedream 5.0 Pro supports up to 10 reference images.
```bash cURL theme={null}
curl https://www.anyfast.ai/v1/images/generations \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "doubao-seedream-5-0-pro",
"prompt": "Edit the marked area and add a ceramic coffee cup with a saucer. Remove sketch lines and keep the original composition.",
"image": "https://example.com/marked-reference.png",
"size": "2K",
"output_format": "png",
"watermark": false
}'
```
For coordinate-based edits, include `` or `` tags in the prompt. Coordinates should refer to the target image region.
```json theme={null}
{
"model": "doubao-seedream-5-0-pro",
"prompt": "Place the subject from image 1 179 283 796 986 into image 2 118 331 933 871.",
"image": [
"https://example.com/source.png",
"https://example.com/target.png"
],
"size": "2K",
"output_format": "png"
}
```
## Input image limits
Seedream 5.0 Pro follows the official Seedream input image limits:
* Supported formats: `jpeg`, `png`, `webp`, `bmp`, `tiff`, `gif`, `heic`, and `heif`.
* Each image must be no larger than `30 MB`.
* Aspect ratio must be between `1/16` and `16`.
* Width and height must each be at least `14px`.
* Total pixels must be no more than `6000x6000 = 36,000,000 px`.
* You can pass up to 10 reference images.
## Parameters
| Parameter | Type | Required | Description |
| ------------------------- | --------------- | -------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| `model` | string | Yes | Must be `doubao-seedream-5-0-pro` |
| `prompt` | string | Yes | Text prompt for image generation or editing. Official guidance recommends keeping prompts concise enough that details do not get diluted. |
| `image` | string or array | No | Reference image URL/Base64 data URI, or an array of references. Required for image editing. Maximum 10 reference images. |
| `size` | string | No | Output size. Use `1K`, `2K`, or a pixel size such as `2048x1024`. Pixel sizes must satisfy the official total-pixel and aspect-ratio limits. |
| `response_format` | string | No | `url` or `b64_json`. Defaults to `url`. URLs are temporary and should be saved promptly. |
| `output_format` | string | No | `png` or `jpeg`. Defaults to `jpeg`. |
| `watermark` | boolean | No | Whether to add the AI-generated watermark. Official default is `true`; set `false` to disable it. |
| `optimize_prompt_options` | object | No | Prompt optimization options. Use `mode: "standard"`. Official documentation says fast mode is not supported for Seedream 5.0 Pro. |
## Size notes
Seedream 5.0 Pro supports two size styles:
* Resolution tiers: `1K` and `2K`. Describe the aspect ratio in the prompt when using a tier.
* Explicit pixels: `widthxheight`, such as `2048x1024`. The official total pixel range is from `1280x720` to `2048x2048x1.1025`, and the aspect ratio range is `[1/16, 16]`.
View the interactive API playground for Seedream 5.0 Pro.