> ## Documentation Index
> Fetch the complete documentation index at: https://docs.unifically.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SeeDream 5.0 Pro

> Flagship image generation and editing with up to 10 reference images and 2K resolution

Generate images using ByteDance SeeDream 5.0 Pro. Supports text-to-image and image editing with up to 10 reference images, 8 aspect ratios, and resolution tiers up to 2K.

## Model

```
bytedance/seedream-5.0-pro
```

## Parameters

| Parameter       | Type      | Required | Default | Description                                                                                                                                                                                                       |
| --------------- | --------- | -------- | ------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `prompt`        | string    | **Yes**  | —       | Text prompt describing the desired image (max 6000 chars). Recommended: ≤ 300 Chinese characters or ≤ 600 English words                                                                                           |
| `aspect_ratio`  | string    | No       | `"1:1"` | `1:1`, `4:3`, `3:4`, `16:9`, `9:16`, `3:2`, `2:3`, `21:9`. Combined with `resolution` to pick the output pixel size (e.g. 2K + 16:9 → 2624x1472)                                                                  |
| `image_urls`    | string\[] | No       | `null`  | Reference image URLs for image editing (max 10). Omit for text-to-image. Max 10 MB each; max 36,000,000 pixels; min side > 14 px; aspect ratio 1/16–16. Formats: jpeg, jpg, png, webp, bmp, tiff, gif, heic, heif |
| `resolution`    | string    | No       | `"2K"`  | `1K`, `1.5K`, `2K` (case-insensitive)                                                                                                                                                                             |
| `output_format` | string    | No       | `"png"` | `jpeg`, `jpg`, `png`                                                                                                                                                                                              |

## Example - Text-to-Image

```bash theme={null}
curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "bytedance/seedream-5.0-pro",
    "input": {
      "prompt": "A cyberpunk city at sunset, neon lights reflecting on wet streets",
      "aspect_ratio": "16:9",
      "resolution": "2K"
    }
  }'
```

## Example - Image-to-Image

```bash theme={null}
curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "bytedance/seedream-5.0-pro",
    "input": {
      "prompt": "Place the animal inside the vintage car",
      "image_urls": [
        "https://example.com/animal.jpg",
        "https://example.com/car.jpg"
      ],
      "resolution": "2K"
    }
  }'
```

<Note>
  SeeDream 5.0 Pro generates exactly one image per request — it has no sequential mode. The `max_sequential_images` and `web_search` parameters available on SeeDream 5.0 Lite are rejected on this model.
</Note>

## Response

```json theme={null}
{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "9d489f02-316f-4386-8188-dc19540d56f5",
    "status": "completed",
    "output": {
      "image_urls": [
        "https://files.unifically.com/image/92116e95-8dd4-4cbb-b53f-ee643e1045d8.png"
      ]
    }
  }
}
```