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Seedream 4.0 sequential 텍스트-투-이미지: AI 비주얼 시리즈 생성기 | 이미지에서 비디오까지

bytedance/seedream-4-0/sequential

1. Get started

Use RunComfy's API to run bytedance/seedream-4-0/sequential. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/bytedance/seedream-4-0/sequential \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "text": "Generate 3 images of a beautiful sunset over a calm ocean."
  }'

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-4-0/sequential \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "text": "Generate 3 images of a beautiful sunset over a calm ocean."
  }'

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": [
    "text"
  ],
  "properties": {
    "text": {
      "title": "Prompt",
      "description": "Your prompt needs to contain the number of images you want to generate. Example: 'Generate 3 images of a beautiful sunset over a calm ocean.'",
      "type": "string",
      "default": "Generate 3 images of a beautiful sunset over a calm ocean.",
      "maxLength": 600
    },
    "image_size": {
      "title": "Aspect Ratio (W:H)",
      "description": "The aspect ratio of the image to generate.",
      "type": "string",
      "enum": [
        "2048:2048 (1:1)",
        "2304:1728 (4:3)",
        "1728:2304 (3:4)",
        "2560:1440 (16:9)",
        "1440:2560 (9:16)",
        "2496:1664 (3:2)",
        "1664:2496 (2:3)",
        "3024:1296 (21:9)"
      ],
      "default": "2560:1440 (16:9)"
    },
    "seed": {
      "title": "Seed",
      "description": "",
      "type": "integer"
    },
    "sequential_image_generation_options": {
      "title": "Maximum Number of Output Images",
      "description": "This value must align with the number of images specified in the prompt above. The final price will be calculated based on this value.",
      "type": "integer",
      "enum": [
        1,
        2,
        3,
        4,
        5,
        6,
        7,
        8,
        9,
        10,
        11,
        12,
        13,
        14,
        15
      ],
      "default": 3
    },
    "optimize_prompt_options": {
      "title": "Optimize Prompt",
      "description": "Standard mode produces higher-quality content but takes longer to generate. Fast mode generates content more quickly, with lower quality.",
      "type": "string",
      "enum": [
        "fast",
        "standard"
      ],
      "default": "fast"
    }
  }
}

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" }
      }
    }
  }
}