23-second AI video with audio references on Wan 3.0 and Seedance

For a 23 second clip that follows an audio reference, use Wan 3.0 or Seedance 2.5 on Sume. Wan accepts up to 5 audio clips with a combined length of 15 s. Seedance 2.5 lists audio references among its capabilities.

Which models accept 23 seconds

Higgsfield Genjutsu and H3 Max Recast take images and a source video instead of audio references.

Audio references need a visual anchor

On the legacy video wire, an audio reference needs an image or video reference alongside it; audio cannot be the only input. MiniMax H3 follows the same rule: audio cannot be the only reference.

The audio total is capped at 15 s on Wan, so a 23 s output will outlast its audio reference. Plan for that: trim to what you need, or add a second beat in the prompt.

What a 23 second request costs

Sume bills the provider list price times 1.25, rounded up to the next cent. The amount is reserved when you submit and refunded if the job fails, so a rejected or failed clip does not cost you. The /v1/videos/models descriptor lists the billable rate in pricing_skus, which is the field to trust over any number in a blog post.

A 23 s Wan clip bills $1.44 at 480p, $2.88 at 720p and $5.75 at 1080p.

Check 23 seconds against the live catalog

Duration support lives in the catalog, not in this page. Each entry on GET /v1/videos/models carries supported_durations, which is every whole second from the model minimum to its maximum, so one membership test answers the question. This script lists every model that accepts 23 s, with its resolutions and billable rates.

Set SUME_API_KEY first. See the Video Generation docs for the request and polling lifecycle.

import os
import requests

N = 23
resp = requests.get(
    "https://api.sume.com/v1/videos/models",
    headers={"Authorization": f"Bearer {os.environ['SUME_API_KEY']}"},
    timeout=30,
)
resp.raise_for_status()
for m in resp.json()["data"]:
    if N in m["supported_durations"]:
        print(m["id"], m["supported_resolutions"], m["pricing_skus"])