Seedance 2 Fast vs Seedance 2 Mini on Sume: limits and price

Seedance 2 Fast and Seedance 2 Mini take the same durations (4 to 15 seconds) and price the same resolutions (480p, 720p, 1080p) on Sume, and differ in price: Fast is $0.3024 per second at 720p, Mini $0.189, a 1.60x ratio that holds at every resolution.

Price grid

Over a batch

Across 100 clips of 8 s at 720p, Mini totals $151.20 and Fast $241.92.

The difference only matters if the output differs in a way your project cares about, which is a test for your own prompts. Sume does not publish a quality ranking between the two.

Test both in one loop

import os, requests

for model in ("seedance-2-mini", "seedance-2-fast"):
    r = requests.post(
        "https://api.sume.com/v1/videos",
        headers={"Authorization": "Bearer " + os.environ["SUME_API_KEY"]},
        json={"model": model, "prompt": "A paper boat on a rain puddle",
              "duration": 6, "resolution": "720p", "aspect_ratio": "1:1"},
    )
    print(model, r.status_code, r.json().get("id"))

Per-second rates

Both ids bill per output second by resolution, so any clip from 4 to 15 seconds is the per-second rate times its length.