seedance-2.0-nsfw API

Use the exact model ID seedance-2.0-nsfw. The model field must match this page exactly.

Sample outputseedance-2.0-nsfwPOST /v1/videos5.1s

Parameters: duration=5resolution=1080pratio=16:9

Prompt: One continuous take, no cuts. The bow cushions of a yacht at anchor, flat blue water around. A blonde woman with a curvy full figure, in a white bikini and tortoiseshell glasses. She sits with her knees up looking out at the sea, then turns to face the camera, lifting her hair off her neck and letting it fall, and settles front on to the lens. Hard midday sun from above, white deck bouncing light back up. Low camera close to her, easing back as she turns and keeping her framed from shoulders to hips, shallow depth of field. Real weight and inertia, natural hair and fabric movement, no text.

This sample is deliberately mild. It is not the content limit of this model ID.

Request that produced this sample

{
  "model": "seedance-2.0-nsfw",
  "prompt": "One continuous take, no cuts. The bow cushions of a yacht at anchor, flat blue water around. A blonde woman with a curvy full figure, in a white bikini and tortoiseshell glasses. She sits with her knees up looking out at the sea, then turns to face the camera, lifting her hair off her neck and letting it fall, and settles front on to the lens. Hard midday sun from above, white deck bouncing light back up. Low camera close to her, easing back as she turns and keeping her framed from shoulders to hips, shallow depth of field. Real weight and inertia, natural hair and fabric movement, no text.",
  "seconds": "5",
  "duration": 5,
  "resolution": "1080p",
  "ratio": "16:9",
  "aspect_ratio": "16:9"
}

Authentication and endpoint

Use a Modelflare API key with https://modelflare.dev/v1. The gateway entry point is POST /v1/videos.

HTTP

Authorization: Bearer YOUR_MODELFLARE_API_KEY

Create a task

bash

curl https://modelflare.dev/v1/videos \
  -H "Authorization: Bearer YOUR_MODELFLARE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2.0-nsfw",
    "content": [{"type": "text", "text": "A white cat runs through a neon-lit street in the rain, cinematic tracking shot"}],
    "resolution": "720p",
    "duration": 5,
    "generate_audio": false
  }'

Poll and download

Save the task ID. Poll GET /v1/videos/{task_id} and download with GET /v1/videos/{task_id}/content. Result URLs may expire, so transfer the file promptly.

bash

curl https://modelflare.dev/v1/videos/TASK_ID \
  -H "Authorization: Bearer YOUR_MODELFLARE_API_KEY"

Request notes

Seedance uses content[] for text, frames, and reference media; the separate Seedance asset management contract is documented independently.

Note

Photorealistic people, real-person photos, and realistic faces cannot be submitted as an image URL or Base64 payload. Upload the image to the Seedance asset library first, wait until its status is Active, then reference asset://<ID> in content[]. A real person also needs the liveness check on that page.

Request parameters

Seedance uses one asynchronous multimodal envelope. Put text and media in content[]; media roles select first/last-frame or reference workflows.

Field	Required	Notes
model	Yes	seedance-2.0-nsfw
content[]	Yes	text, image_url, video_url, and audio_url; use role to identify media purpose
resolution	No	480p / 720p / 1080p / 4k (default 720p)
ratio	No	21:9 / 16:9 / 4:3 / 1:1 / 3:4 / 9:16 / adaptive
duration	No	4–15 seconds
generate_audio	No	Generate synchronized dialogue, effects, and background audio
tools	No	Use web_search only where the official model page supports it
watermark	No	Whether to add a watermark

Input and output limits

This model supports 480p, 720p, 1080p, and 4k output with a 4–15 second duration. Multimodal references allow up to nine images, three videos, and three audio clips; audio cannot be used alone. Mark media with role values in content[]; first-frame, editing, extension, and web-search workflows have their own constraints. Photorealistic people, real-person photos, and realistic faces must be uploaded to the asset library first; do not submit them as an image URL or Base64 payload.

Documented workflow examples

The Seedance 2.0 series supports text-to-video, first/first-and-last frames, multimodal references, editing, extension, and web search for text-to-video. Order media as text, image, video, then audio.

Multimodal reference

bash

curl https://modelflare.dev/v1/videos \
  -H "Authorization: Bearer YOUR_MODELFLARE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2.0-nsfw",
    "content": [
      {"type": "text", "text": "@image1 performs the movement from @video1, paced to @audio1"},
      {"type": "image_url", "image_url": {"url": "https://example.com/character.jpg"}, "role": "reference_image"},
      {"type": "video_url", "video_url": {"url": "https://example.com/motion.mp4"}, "role": "reference_video"},
      {"type": "audio_url", "audio_url": {"url": "https://example.com/music.mp3"}, "role": "reference_audio"}
    ],
    "generate_audio": true, "ratio": "16:9", "duration": 11
  }'

Video editing and web search

bash

curl https://modelflare.dev/v1/videos \
  -H "Authorization: Bearer YOUR_MODELFLARE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2.0-nsfw", "content": [{"type": "text", "text": "Macro shot of cherry blossoms in spring"}],
    "generate_audio": true, "ratio": "16:9", "duration": 11,
    "tools": [{"type": "web_search"}]
  }'

Errors and failed tasks

Invalid model parameters return a 4xx with a request ID. An asynchronous task can also enter failed after creation succeeds; use error_code and error_message from the poll response as the final task reason. Do not retry the same request with a different JSON shape.

Supported scope

This page covers Modelflare model generation and editing calls. Search or map enrichment, voice management, and element-library management are resource APIs outside this public model-call surface and are not required request fields.

Pricing and billing

This model uses token-based billing. See the model pricing page for the current customer price, reference list price, and complete specification.

Note

This page documents Modelflare’s public interface; the fields and limits shown here are the current contract.

Variants

Model ID	Difference
seedance-2.0-nsfw	The model documented on this page.
seedance-2.0	The base model. Same endpoint, request contract, and billing unit; only the model ID changes — see its own page, and the pricing page for price and availability.