Bytedance Seedream 4.5 API | Pricing & Docs

bytedance/seedream-4-5/edit

字節跳動的 Seedream 4.5 Edit 圖片編輯模型提供專業的 4K 圖像處理能力和增強的提示詞理解，透過 RunComfy 的 Playground 和 API 即時可用。

1. Get started

Use RunComfy's API to run bytedance/seedream-4-5/edit. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedream-4-5/edit \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "The man is riding a motor cycle on the road"
  }'

2. Authentication

Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedream-4-5/edit \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "The man is riding a motor cycle on the road"
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id, in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

Provide a publicly reachable HTTPS URL. Ensure the host allows server‑side fetches (no login/cookies required) and isn't rate‑limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre‑signed URLs for private assets.

5. Schema

Input schema

{
  "type": "object",
  "title": "Input",
  "required": [
    "prompt",
    "image_urls"
  ],
  "properties": {
    "prompt": {
      "title": "提示詞",
      "description": "建議長度不超過 600 個英文單詞。如果提示詞過長，資訊可能會分散。模型可能會忽略細節，只關注要點，導致生成的圖像缺少元素。",
      "type": "string",
      "default": "The man is riding a motor cycle on the road"
    },
    "images": {
      "title": "圖像",
      "description": "上傳 1~14 張圖像。格式必須為 jpeg 或 png",
      "type": "array",
      "items": {
        "type": "string",
        "format": "image_uri"
      },
      "validations": [
        {
          "validation_rule": "file_size_mb<",
          "validation_value": 10,
          "validation_error": "檔案大小必須小於 10 MB。"
        },
        {
          "validation_rule": "width/height>",
          "validation_value": 0.0625,
          "validation_error": "寬高比範圍應為 1:16 到 16:1。"
        },
        {
          "validation_rule": "width/height<",
          "validation_value": 16,
          "validation_error": "寬高比範圍應為 1:16 到 16:1。"
        },
        {
          "validation_rule": "width_pixels>",
          "validation_value": 14,
          "validation_error": "上傳圖像的寬度和高度必須超過 14 像素。"
        },
        {
          "validation_rule": "height_pixels>",
          "validation_value": 14,
          "validation_error": "上傳圖像的寬度和高度必須超過 14 像素。"
        }
      ],
      "maxItems": 14,
      "minItems": 1,
      "default": [
        "https://playgrounds-storage-public.runcomfy.net/tools/7250/media-files/input-1-1.png",
        "https://playgrounds-storage-public.runcomfy.net/tools/7250/media-files/input-1-2.png",
        "https://playgrounds-storage-public.runcomfy.net/tools/7250/media-files/input-1-3.png"
      ]
    },
    "resolution": {
      "title": "解析度",
      "description": "對於 2K 和 4K 選項，模型將自動確定寬度和高度。您應該在提示詞中用自然語言描述其寬高比、形狀或用途。對於其他選項，您可以選擇所需的寬度和高度。",
      "type": "string",
      "enum": [
        "2K",
        "4K",
        "2048x2048 (1:1)",
        "2304x1728 (4:3)",
        "1728x2304 (3:4)",
        "2560x1440 (16:9)",
        "1440x2560 (9:16)",
        "2496x1664 (3:2)",
        "1664x2496 (2:3)",
        "3024x1296 (21:9)",
        "4096x4096 (1:1)"
      ],
      "default": "2048x2048 (1:1)"
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": { "type": "string", "format": "uri" }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": { "type": "string", "format": "uri" }
      }
    }
  }
}

RunComfy

RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.

Seedream 4.5 Edit 圖片編輯免費：AI 影像編輯、圖生圖、局部重繪與換背景 | RunComfy