How long can a Seedance 2.0 4K video be?

4 to 15 seconds per request, in 1-second steps.

How much does a 15-second Seedance 2.0 4K video cost?

6,285 credits at 4k, standard tier — about $62.85. The studio shows the exact figure before you generate and asks you to confirm anything over 800 credits.

Which plan includes Seedance 2.0 4K?

The Pro plan and above. There is no free tier — every generation costs real GPU time, so access starts with a paid plan or a credit pack.

How many reference inputs does Seedance 2.0 4K accept?

Up to 12 in total: 9 images, 3 videos of at most 15s each, and 3 audio clips.

Seedance 2.0 4K

High-resolution finals at up to 15 seconds.

What is Seedance 2.0 4K?

Seedance 2.0 4K generates 4–15 second video at up to 4k, with 9 image and 3 video references per request and native audio. It is available on the Pro plan and above, and through the API at /api/v1/generations. Typical wall-clock is 180s (p50) and 360s (p95).

Capabilities

CapabilityByteDance’s claimOur measurement

Duration4–15s in 1s stepsconfirmed

Resolutions1080p, 4kconfirmed

Aspect ratios16:9, 9:16, 4:3, 3:4, 21:9, 1:1confirmed

Native audioYesconfirmed

Total references12confirmed

Image references9confirmed

Video references3 (≤15s each)confirmed

Audio references3confirmed

End frameYesconfirmed

Return last frameYesconfirmed

Video extensionYesconfirmed

Region-level editingNoconfirmed

R2V controlNoconfirmed

3D camera blockoutNoconfirmed

Multilingual dialogueNoconfirmed

A row reads “not verified yet” when the figure comes from ByteDance’s announcement and we have not confirmed it against the provider API ourselves. We would rather show the gap than restate a keynote.

What it costs

Credit cost at 4k, standard tier. Derived from published vendor rates pending our own benchmark run.

00:00:04:004k16:9standard1,680cr≈ $16.80

00:00:10:004k16:9standard4,192cr≈ $41.92

00:00:15:004k16:9standard6,285cr≈ $62.85

Call it from the API

curl https://sedance.app/api/v1/generations \
  -H "Authorization: Bearer $SEDANCE_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2.0-4k",
    "prompt": "A slow dolly-in across a rain-soaked rooftop at dusk",
    "resolution": "4k",
    "duration_sec": 15,
    "aspect_ratio": "16:9",
    "confirm_cost": true
  }'

Returns 202 with the job id and the credits held. Poll /api/v1/generations/:id — the poll cadence for a 15s job should start at 3s.

Questions

How long can a Seedance 2.0 4K video be?: 4 to 15 seconds per request, in 1-second steps.
Does Seedance 2.0 4K support 4K?: It outputs up to 4K.
How much does a 15-second Seedance 2.0 4K video cost?: 6,285 credits at 4k, standard tier — about $62.85. The studio shows the exact figure before you generate and asks you to confirm anything over 800 credits.
Which plan includes Seedance 2.0 4K?: The Pro plan and above. There is no free tier — every generation costs real GPU time, so access starts with a paid plan or a credit pack.
How many reference inputs does Seedance 2.0 4K accept?: Up to 12 in total: 9 images, 3 videos of at most 15s each, and 3 audio clips.

Seedance 2.5 — 30 seconds in a single pass — no stitching, no seam to hide.
Seedance 2.0 — The workhorse: native audio, 9 image / 3 video / 3 audio references.
Seedance 2.0 Fast — Draft here first. Iterate cheap, then commit to length.
Seedance 2.0 Mini — The cheapest 2.x route. Free-tier and drafting.
Seedance 1.5 Pro — Budget tier and free trials.