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Seedream 5.0 Lite テキストから画像:レイアウト制御で高精度テキスト→画像 | RunComfy

bytedance/seedream-5/lite/text-to-image

Seedream 5.0 Lite テキストから画像で、テキストや参照画像から高忠実度ビジュアルを生成。精密なレイアウト、多言語テキストの正確さ、リアルタイムのスタイル制御で、ブランド/商品/マーケティング向けデザインに対応します。

Table of contents

1. Get started2. Authentication3. API referenceSubmit a requestMonitor request statusRetrieve request resultsCancel a request4. File inputsHosted file (URL)5. SchemaInput schemaOutput schema

1. Get started

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

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedream-5/lite/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A vibrant close-up editorial portrait featuring a model with a sharp, piercing gaze, wearing a sculptural hat. Rich color blocking, crisp focus on the eyes, and a shallow depth of field create a striking visual impact. Styled with a Vogue cover aesthetic, captured in medium format, with bold and dramatic studio lighting."
  }'

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-5/lite/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A vibrant close-up editorial portrait featuring a model with a sharp, piercing gaze, wearing a sculptural hat. Rich color blocking, crisp focus on the eyes, and a shallow depth of field create a striking visual impact. Styled with a Vogue cover aesthetic, captured in medium format, with bold and dramatic studio lighting."
  }'

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"
  ],
  "properties": {
    "prompt": {
      "title": "プロンプト",
      "description": "推奨の長さは英語で600語以内です。プロンプトが長すぎると情報が散漫になり、モデルが細部を無視して主な要点だけに集中し、要素が欠けた画像になる可能性があります。",
      "type": "string",
      "default": "A vibrant close-up editorial portrait featuring a model with a sharp, piercing gaze, wearing a sculptural hat. Rich color blocking, crisp focus on the eyes, and a shallow depth of field create a striking visual impact. Styled with a Vogue cover aesthetic, captured in medium format, with bold and dramatic studio lighting."
    },
    "resolution": {
      "title": "解像度",
      "description": "2K と 3K のオプションでは、幅と高さはモデルが決定します。アスペクト比、形状、用途をプロンプトで自然な文章として説明してください。それ以外のオプションでは、希望の幅と高さを選択できます。",
      "type": "string",
      "enum": [
        "2K",
        "3K",
        "2048x2048 (1:1)",
        "2304x1728 (4:3)",
        "1728x2304 (3:4)",
        "2848x1600 (16:9)",
        "1600x2848 (9:16)",
        "2496x1664 (3:2)",
        "1664x2496 (2:3)",
        "3136x1344 (21:9)",
        "3072x3072 (1:1)",
        "3456x2592 (4:3)",
        "2592x3456 (3:4)",
        "4096x2304 (16:9)",
        "2304x4096 (9:16)",
        "3744x2496 (3:2)",
        "2496x3744 (2:3)",
        "4704x2016 (21:9)"
      ],
      "default": "2304x1728 (4:3)"
    },
    "sequential_image_generation": {
      "title": "順次画像生成",
      "description": "このオプションを有効にすると、画像を順番に生成します。",
      "type": "string",
      "enum": [
        "auto",
        "disabled"
      ],
      "default": "disabled"
    },
    "max_images": {
      "title": "最大画像数",
      "description": "生成する画像の最大枚数。sequential_image_generation が auto のときのみ有効です。",
      "type": "integer",
      "enum": [
        1,
        2,
        3,
        4,
        5,
        6,
        7,
        8,
        9,
        10,
        11,
        12,
        13,
        14,
        15
      ],
      "default": 15
    },
    "output_format": {
      "title": "出力形式",
      "description": "出力画像の形式。生成される画像のフォーマットを決定します。",
      "type": "string",
      "enum": [
        "png",
        "jpeg"
      ],
      "default": "png"
    },
    "optimize_prompt_options": {
      "title": "プロンプト最適化",
      "description": "プロンプト最適化機能のモードを設定します。standard:高品質だが生成時間が長め。fast:より高速だが品質は平均的。",
      "type": "string",
      "enum": [
        "standard",
        "fast"
      ],
      "default": "standard"
    }
  }
}

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" }
      }
    }
  }
}
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