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Dreamina Seedance 2.0 vs Veo 3.1

vs

Which one, when — curated verdict, not a benchmark table

Both take text or image input and return 24 fps .mp4 video with native audio and first-frame or first/last-frame guidance, so the real split is reach versus predictability: dreamina-seedance-2-0-260128 (2026-01) spans 480p to 4K with any duration from 4–15 s and 6 aspect ratios, while veo-3.1-generate-001 (2025-10) is fixed to 720p/1080p, 4/6/8 s and 16:9 or 9:16, with up to 2 guide images. Note the two bill in different units — $7 per million output tokens versus $0.2 per second without audio and $0.4 with — so no single conversion is honest; price per clip must be checked against your own shot lengths.

Pricing

Dreamina Seedance 2.0 Veo 3.1 Δ
Per output second (with audio) $0.4
Per output second (silent) $0.2
Per 1M video tokens $7

These two models bill in different units, so no Δ is shown — converting between them would require an assumption we have not measured. Each card is listed in its own unit above.

Capabilities

Dreamina Seedance 2.0 Veo 3.1
Native audio yes yes

Specs

Dreamina Seedance 2.0 Veo 3.1
Input modalities text image text image
Output modalities video video
Released 2026-01 2025-10
Resolution 480p – 4K (10-bit at 4K) (range) 720p / 1080p (fixed set)
Clip length 4–15 s (range) 4 / 6 / 8 s (fixed set)
Frame rate 24 fps 24 fps
Aspect ratios 6 (incl. 16:9, 9:16, 1:1)
  • 16:9
  • 9:16
Input modes
  • text-to-video
  • first-frame & first/last-frame image-to-video
  • text-to-video
  • first-frame & first/last-frame image-to-video (up to 2 guide images)
Format .mp4 .mp4

Specs are transcribed from each vendor’s documentation; a row a vendor does not publish is left out rather than inferred. Full sources: Dreamina Seedance 2.0 · Veo 3.1

One prompt, both models — measured through the gateway

PROMPT A paper boat drifts across a rain puddle at dusk. The camera pushes in slowly as a single drop lands beside it and rings spread outward across the reflection.

Dreamina Seedance 2.0

Model returned 1280×720 Length 5s latency 133 s

Veo 3.1

Model returned 1280×720 Length 8s latency 63 s

One prompt, one request per model, no retries and no cherry-picking — the first result each model returned. Neither size nor duration was pinned: each model used its own default, because a request shaped to fit all of them would flatter none. Files here are re-encoded for the web, so judge composition and prompt adherence, not compression.

Switch between them with one line

Both ids are in every tab below — the highlighted pair of lines is the only edit. Same endpoint, same key, same request shape.

import time

import requests

BASE = "https://synthorai.io/v1"
HEADERS = {"Authorization": "Bearer sk-syn-..."}

# 1) create the video generation job (POST /v1/videos)
task = requests.post(
    f"{BASE}/videos",
    headers=HEADERS,
    json={
        "model": "dreamina-seedance-2-0-260128",
        # "model": "veo-3.1-generate-001",  # uncomment this line, comment the one above
        "prompt": "a watercolor lighthouse at dawn, waves rolling in, camera pulling back",
        "resolution": "720p",
        "duration": 5,
    },
).json()

# 2) poll the job until it reaches a terminal state
while task["status"] in ("queued", "in_progress"):
    time.sleep(5)
    task = requests.get(f"{BASE}/videos/{task['id']}", headers=HEADERS).json()

# 3) completed → signed video URL (valid ~24h — download and store it promptly)
if task["status"] == "completed":
    print(task["data"][0]["url"])
else:
    print(task["error"])

Get an API key →

FAQ

Which is cheaper, Dreamina Seedance 2.0 or Veo 3.1?

They bill in different units, so there is no single honest number: Dreamina Seedance 2.0 and Veo 3.1 each appear in their own unit in the table above. Compare them on your own workload — the practical trade-off is described in the verdict at the top of this page.

Can I A/B test Dreamina Seedance 2.0 against Veo 3.1 without two integrations?

Yes. Both are served through the same OpenAI-compatible endpoint with one API key — switching is a one-line model-string change, so you can route a fraction of traffic to each and compare bills directly.

What clip lengths and resolutions do they support?

The spec table above lists each model’s published resolutions and clip lengths, and marks whether a value is a fixed set of options or a continuous range — the two look alike and price differently, since per-second billing multiplies with length.

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