img_uuid, and complete the workflow through polling or callbacks. GoEnhance is a third-party platform, not an official ByteDance API.Seedance 1.0 Pro Fast API
Access Seedance 1.0 Pro Fast through the independent GoEnhance Open API. Submit a prompt with an optional first-frame image, save the returned
Create an API Key
Two Input Modes, One Async Endpoint
Generate Video from a Prompt
Set model to seedance-pro-fast and provide the required prompt. Choose duration, resolution, and a supported aspect ratio for text-to-video requests.
Animate a First-Frame Image
Add one public image_url to run image-to-video from that first frame. When an image is supplied, the documented ratio field is ignored.
Validate the exact route fields before submitting a billable asynchronous task.
Seedance 1.0 Pro Fast API Capabilities
Exact Model ID
Send <code>model: seedance-pro-fast</code>. The model value and <code>prompt</code> are required.
Optional First Frame
Provide a URI in <code>image_url</code> for image-to-video, or omit it for text-to-video.
2–12 Second Duration
<code>duration</code> accepts integers from 2 through 12 seconds and defaults to 5.
Three Resolution Tiers
Choose <code>480p</code>, <code>720p</code>, or <code>1080p</code>. The documented default is <code>480p</code>.
Text-to-Video Ratios
Choose 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, or adaptive. The default is 16:9; ratio is ignored when <code>image_url</code> is present.
Callback Option
Supply a public HTTPS <code>custom_callback_url</code> to receive processing, success, and failed status updates.
Estimated generation cost is the selected per-second rate multiplied by the requested duration. USD equivalents use the documented $0.02 per token.
Seedance 1.0 Pro Fast API Pricing
480p — 0.3 tokens/s
GoEnhance lists $0.006 per generated second.
720p — 0.69 tokens/s
GoEnhance lists $0.0138 per generated second.
1080p — 1.5 tokens/s
GoEnhance lists $0.03 per generated second.
Integrate Seedance Pro Fast in Three Steps
1
1. Build and Validate the Request
Create an API key, set the exact model ID, add a prompt, and validate duration, resolution, ratio, optional first-frame URL, and callback URL.
2
2. Submit and Save img_uuid
POST the JSON body to
https://api.goenhance.ai/api/v1/videos/generations with bearer authentication. On response-level success, persist data.img_uuid. 3
3. Resolve the Terminal Result
Poll
GET https://api.goenhance.ai/api/v1/jobs/detail?img_uuid=... or process callback events idempotently until the task succeeds or fails.Build developer workflows around content you own or are authorized to use.
Seedance 1.0 Pro Fast API Use Cases
Ad Concept Variants
Generate short motion concepts from structured campaign prompts and send outputs through editorial review.
Product Image Animation
Use an approved product visual as the first frame for short launch, catalog, or social video drafts.
Storyboard Previsualization
Turn shot descriptions into concise motion studies for camera direction, pacing, and scene planning.
Localized Creative Pipelines
Automate prompt variants, asynchronous task tracking, storage, and review across target markets.
Content Prototyping
Explore scene and motion directions before committing production resources to a finished campaign.
Batch Media Workflows
Connect submission, task IDs, callbacks, asset storage, and human approval inside your own application.
Answers about pricing, inputs, validation, asynchronous delivery, and ByteDance API search intent.