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

# Seedream 4.5 图生图

> 字节跳动 Seedream 4.5 图生图模型，使用参考图片和文本提示词生成图片。

Seedream 4.5 图生图是字节跳动 Seedream 系列的图生图模型，通过 Anyfast API 提供服务。

## 核心能力

* **图生图** — 使用参考图片和文本提示词生成图片
* **连续生成** — 单次请求批量生成多张图片
* **自定义尺寸** — 灵活的输出尺寸
* **水印控制** — 可选水印和 Logo 配置

## 快速示例

<CodeGroup>
  ```bash cURL theme={null}
  curl https://www.anyfast.com.cn/v1/images/generations \
    -H "Authorization: Bearer YOUR_API_KEY" \
    -H "Content-Type: application/json" \
    -d '{
      "model": "doubao-seedream-4-5-251128",
      "prompt": "生成女孩和奶牛玩偶在游乐园开心地坐过山车的图片，涵盖早晨、中午、晚上",
      "image": ["https://example.com/ref1.png", "https://example.com/ref2.png"],
      "sequential_image_generation": "auto",
      "sequential_image_generation_options": {
        "max_images": 3
      },
      "size": "2K",
      "watermark": false
    }'
  ```

  ```python Python theme={null}
  import requests

  response = requests.post(
      "https://www.anyfast.com.cn/v1/images/generations",
      headers={
          "Authorization": "Bearer YOUR_API_KEY",
          "Content-Type": "application/json"
      },
      json={
          "model": "doubao-seedream-4-5-251128",
          "prompt": "生成女孩和奶牛玩偶在游乐园开心地坐过山车的图片，涵盖早晨、中午、晚上",
          "image": ["https://example.com/ref1.png", "https://example.com/ref2.png"],
          "sequential_image_generation": "auto",
          "sequential_image_generation_options": {
              "max_images": 3
          },
          "size": "2K",
          "watermark": False
      }
  )

  task = response.json()
  print(f"任务 ID: {task['id']}")
  ```
</CodeGroup>

## 参数说明

| 参数                                    | 类型      | 必填 | 说明                                                 |
| ------------------------------------- | ------- | -- | -------------------------------------------------- |
| `model`                               | string  | 是  | 固定为 `doubao-seedream-4-5-251128`                   |
| `prompt`                              | string  | 是  | 图片生成提示词                                            |
| `image`                               | array   | 是  | 参考图片 URL 数组                                        |
| `sequential_image_generation`         | string  | 否  | 设为 `auto` 启用批量生成                                   |
| `sequential_image_generation_options` | object  | 否  | 选项：`max_images`（int）                               |
| `size`                                | string  | 否  | 输出图片尺寸，如 `1024x1024`、`2K`                          |
| `watermark`                           | boolean | 否  | 默认 `false`                                         |
| `seed`                                | integer | 否  | 随机种子                                               |
| `logo_info`                           | object  | 否  | Logo 配置：`add_logo`、`position`、`language`、`opacity` |

<Card title="API 参考" icon="code" href="/api-reference/model-api/bytedance/doubao-seedream-4-5-251128-i2i">
  查看 Seedream 4.5 图生图的交互式 API Playground。
</Card>

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