APIMART Growth evidence. Product facts and prices were checked on 2026-09-02. CTA links are attributed to this exact GitHub guide.
Seedance 2.5 API Limits: Duration, Resolution and References
The APIMART Seedance 2.5 API documentation lists a 30-second maximum output, up to 30 reference images, 10 reference videos and 10 reference audios, and output resolutions of 480p, 720p and 1080p. Requests run asynchronously and return a task ID for polling.
Seedance 2.5 limits at a glance
| Limit | Verified APIMART endpoint value | |---|---:| | Maximum generated duration | 30 seconds | | Reference images | 30 | | Reference videos | 10 | | Reference audio files | 10 | | Maximum reference-audio duration | 30 seconds total; each clip 2–30 seconds | | Maximum audio upload size | 15 MB | | Resolutions | 480p, 720p, 1080p | | Output formats | MP4, MOV | | Result-link lifetime | Endpoint docs: long-lived re-hosted CDN URL; Playground UI: 72-hour message | | Processing | Asynchronous task ID and polling |
How long can a Seedance 2.5 video be?
The current APIMART API documentation lists up to 30 seconds per generation job. The public Playground may initially display a 5-second selection, so production code should use only durations accepted by the current API schema and handle validation errors.
Does the APIMART endpoint support 4K?
The current APIMART endpoint documentation lists 480p, 720p and 1080p. Some upstream Seedance 2.5 announcements and existing articles discuss native 4K capabilities, but that does not prove that the APIMART endpoint currently accepts 4K output. Product copy should keep upstream model capability separate from verified endpoint availability.
How many references can one request use?
The documented maximum is 30 images, 10 videos and 10 audio references. First-frame and last-frame workflows use image roles; when video or audio references are included, the API applies reference-task rules that the prompt must also satisfy.
What audio files are supported?
The public model interface accepts WAV and MP3 reference audio, with up to 10 files and a 15 MB limit per file. The endpoint documentation states that total submitted audio duration must not exceed 30 seconds and each clip must be between 2 and 30 seconds.
How does task processing work?
A generation request returns a task ID. The client polls the task endpoint or uses the documented asynchronous workflow until the job succeeds or fails. The current endpoint documentation describes re-hosted result URLs as long-lived, while the public Playground still displays a 72-hour message; production systems should copy outputs into controlled durable storage rather than rely on either label.
FAQ
What is the maximum Seedance 2.5 duration?
The APIMART documentation lists up to 30 seconds per job.
Does Seedance 2.5 support 4K through APIMART?
The currently verified APIMART endpoint documentation lists up to 1080p. Treat upstream 4K capability as separate until the APIMART schema exposes and validates 4K.
How many reference images can I add?
Up to 30 reference images are listed for the current endpoint.
How many reference videos and audios can I add?
The current endpoint lists up to 10 reference videos and 10 reference audios.
How long does the download link last?
Two current APIMART surfaces differ: the endpoint documentation calls re-hosted CDN URLs long-lived, while the Playground displays 72 hours. Production systems should copy outputs into durable storage promptly while APIMART reconciles the wording.
Test the verified endpoint
Open the attributed Seedance 2.5 model page and review the current generation API documentation before submitting a paid request.
Sources and disclosure
Sources: APIMART Seedance 2.5 model page, public Playground and English API documentation, observed September 2, 2026. APIMART operates the endpoint described here; limits must be revalidated against the live schema before publication and on every scheduled refresh.
APIMART links for this guide
Machine-readable schema source
The eventual APIMART CMS page should emit the following JSON-LD objects.
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"mainEntityOfPage": "https://apimart.ai/blog/seedance-2-5-api-limits-duration-resolution-references",
"dateModified": "2026-09-02",
"author": {
"@type": "Organization",
"name": "APIMART"
}
},
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [
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"acceptedAnswer": {
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}
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{
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},
{
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