loopling.ai

Video

Seedance 2.5

seedance-2.5 · from $0.116 / s

18% below Higgsfield · Prices as of October 4, 2026. Against Higgsfield’s 480p price, per second of 16:9 video with audio. Higgsfield: the launch-offer price its catalogue displays. Sources: Higgsfield · Seedance 2.5 playground · Higgsfield · Seedance 2.0 playground · Higgsfield · pricing · Full comparison

Generates single takes of up to 30 seconds with a synchronised audio track, from text, frames or references.

Playground · API · View docs

Pricing

  • 480p $0.116 / s
  • 720p $0.260 / s
  • 1080p $0.640 / s

Per delivered second. Every input costs the same; audio is included.

All prices

API reference

Generate with Seedance 2.5 in three calls: submit, poll, download.

POST /v1/video/generations

  • Base URL: https://loopling.ai/v1
  • Authentication: Authorization: Bearer $LOOPLING_API_KEY

Request body

FieldTypeRequiredNotes
model"seedance-2.5"RequiredModel id.
promptstring ≤ 4,000OptionalUp to 4,000 characters. Optional with a first frame or an image or video reference.
aspect_ratio"21:9" | "16:9" | "4:3" | "1:1" | "3:4" | "9:16" | "adaptive"Optionaladaptive follows the first frame or the references. Default "16:9".
resolution"480p" | "720p" | "1080p"OptionalSome aspect ratios cap it; see limits below. Default "720p".
durationinteger 4–30OptionalWhole seconds. No "auto". Default 5.
generate_audiobooleanOptionalSynchronised audio track. Included in price. Default true.
seedintegerOptional-1 to 2147483647. Best-effort reproducibility.
first_frame_urlhttps URLOptionalOpening frame (https image).
last_frame_urlhttps URLOptionalClosing frame. Needs first_frame_url.
reference_image_urlshttps URL[] ≤ 30OptionalStyle and subject references.
reference_video_urlshttps URL[] ≤ 10OptionalMotion references.
reference_audio_urlshttps URL[] ≤ 10OptionalSound references.
metadataobject ≤ 4 KiBOptionalUp to 4 KiB of JSON, echoed in request.

Seedance 2.5 limits

  • Duration 4–30 s.
  • Resolutions 480p, 720p, 1080p.
  • Aspect ratios 21:9, 16:9, 4:3, 1:1, 3:4, 9:16, adaptive.
  • At 9:16, adaptive the ceiling is 720p.
  • Up to 50 references: 30 images, 10 videos, 10 audio.
  • Use frames or references, not both.

Submit · POST /v1/video/generations

curl

curl https://loopling.ai/v1/video/generations \
  -H "Authorization: Bearer $LOOPLING_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2.5",
    "prompt": "A paper lantern drifting over a night harbour, slow dolly in",
    "aspect_ratio": "16:9",
    "resolution": "1080p",
    "duration": 5,
    "generate_audio": true
  }'

Node

const res = await fetch('https://loopling.ai/v1/video/generations', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.LOOPLING_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "model": "seedance-2.5",
    "prompt": "A paper lantern drifting over a night harbour, slow dolly in",
    "aspect_ratio": "16:9",
    "resolution": "1080p",
    "duration": 5,
    "generate_audio": true
  }),
})
const generation = await res.json() // { id: 'vgen_…', status: 'queued', ink_reserved, … }

Python

import os, requests

res = requests.post(
    "https://loopling.ai/v1/video/generations",
    headers={"Authorization": f"Bearer {os.environ['LOOPLING_API_KEY']}"},
    json={
        "model": "seedance-2.5",
        "prompt": "A paper lantern drifting over a night harbour, slow dolly in",
        "aspect_ratio": "16:9",
        "resolution": "1080p",
        "duration": 5,
        "generate_audio": True,
    },
)
generation = res.json()  # {"id": "vgen_…", "status": "queued", ...}

Common errors

StatusCodeWhat to do
400invalid_request_errorparam names the field, when there is one. Fix it and resend.
401invalid_api_keyThe key is missing, revoked or mistyped.
402insufficient_inkYour balance can’t cover the hold. Top up.
404generation_not_foundNo generation with that id on this account.
429rate_limit_exceededOver 60 requests a minute on this key. Wait for Retry-After.
503provider_unavailableThe provider is unavailable. Not charged; retry after Retry-After with a new Idempotency-Key.

Full video reference

Made with Seedance

Citadel at First Light

Seedance 2.5 · 1080p · 8 s

An immense city carved directly into the walls of a pale sandstone canyon at first light: terraced stairways, colonnades and tall arched doorways stacked hundreds of metres high, half-veiled by slowly drifting low cloud. A single traveller in a long rust-red cloak, tiny against the scale, walks across a narrow stone bridge spanning the gorge toward a great doorway glowing with warm lamplight. The camera makes one slow, steady aerial dolly forward with a gentle descent, passing through a thin layer of cloud so the architecture reveals itself layer by layer. Low golden sun rakes across the stone from the left, long cool blue shadows fill the depths, fine dust and mist catch the light. Photorealistic, epic and serene, large-format cinema look, natural colour, rich detail in weathered stone. One continuous shot, smooth and stable, no text.

Use this prompt

Liquid Gold

Seedance 2.5 · 720p · 6 s

Extreme macro, high-speed cinematography: a single heavy drop of molten gold falls into a still pool of glossy black ink and blooms into a crown of liquid-metal filaments that arc outward, then collapse back into slow concentric golden rings. Tiny suspended droplets glint as they rise and fall. Pure black background, one hard rim light from above and a soft warm fill, mirror-like reflections on the ink surface, visible surface tension and viscosity. Camera locked off at surface level with a very slow push-in, extremely shallow depth of field. Ultra-detailed, premium material study, no text, no logos.

Use this prompt

Window Seat

Seedance 2.5 · 720p · 8 s

A fictional young woman in her mid-twenties with a long dark braid over one shoulder and a cream cable-knit sweater sits beside a rain-streaked train window at dusk. Warm light from passing platforms slides across her face in slow waves while a blue, misty landscape blurs past outside. She gazes out of the window, then turns toward the camera and her expression softens into a slow, quiet smile. Raindrops trace diagonal lines across the glass in the foreground. Slow push-in from a medium shot to a close-up, 50mm lens, shallow depth of field, subtle film grain. An ordinary, original face with natural skin texture, stable facial features and realistic proportions; intimate and cinematic; no text, no legible signs.

Use this prompt

More Seedance models

Same request, another model.

ModelPriceResolutionDuration
Seedance 2.0$0.079 – $0.421 / s480p – 1080p4 – 15 s
Seedance 2.0 Fast$0.063 – $0.136 / s480p – 720p4 – 15 s

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