> ## 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 Flash

> Fast, low-cost image generation and editing with up to 10 reference images and 2K resolution. See parameters and API examples.

Generate images using ByteDance SeeDream 5.0 Flash, the fast and low-cost sibling of 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. Every resolution costs the same, and reference images are not charged.

See the whole family: [SeeDream API models](https://unifically.com/models/seedream).

## Model

```
bytedance/seedream-5.0-flash
```

## Parameters

| Parameter | Type | Required | Default | Description |
| - | - | - | - | - |
| `prompt` | string | **Yes** | — | Text prompt describing the desired image |
| `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. Must be public `https` URLs |
| `resolution` | string | No | `"2K"` | `1K`, `1.5K`, `2K` (case-insensitive) |
| `output_format` | string | No | `"png"` | `jpeg`, `jpg`, `png` |
| `nsfw_check` | boolean | No | `false` | Check the prompt and input images for NSFW content before generating. Off unless set to `true` |

## 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-flash",
    "input": {
      "prompt": "A ripe red apple on a wooden table, soft window light",
      "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-flash",
    "input": {
      "prompt": "Turn this photo into a watercolor painting",
      "image_urls": [
        "https://example.com/photo.jpg"
      ],
      "resolution": "1K",
      "aspect_ratio": "4:3"
    }
  }'
```

> [!NOTE]
>
> SeeDream 5.0 Flash generates exactly one image per request. Unknown parameters are rejected, including the `max_sequential_images` and `web_search` parameters available on SeeDream 5.0 Lite.

## Response

```json theme={null}
{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "0770418f-709f-4e4b-a1a7-d2e597a5d38e",
    "status": "processing"
  }
}
```

> [!NOTE]
>
> **Volume discounts** are available for almost all models. Reach out at [contact@unifically.com](mailto:contact@unifically.com) to discuss custom pricing.


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