ByteDanceVideo model

Seedance 2.5

Thirty seconds, one take.

Seedance 2.5 sample output
Up to 30sNative audio30 references
From 184 credits per 5 secondsGenerate with Seedance 2.5

Why Seedance 2.5

Thirty seconds, uncut

A full clip in one pass, with no stitching and no seam where two generations were taped together. Twice the ceiling of Seedance 2.0.

Made for

  • Full length ads

    A thirty second spot is the standard unit of paid media. This renders one as one thing, not as a stitched sequence.

  • Multi shot narrative

    Set up, develop and pay off inside a single generation, with the same cast in every beat.

  • Explainers and demos

    Long enough to walk through a product properly, with narration generated alongside the picture.

  • Character driven UGC

    Thirty reference images pin a presenter hard enough to reuse them across a whole campaign.

  • Music led social

    Native audio means the cut lands on the beat instead of being nudged into place in an editor.

The specs

Provider
ByteDance
Resolution
480p, 720p, 1080p
Frame rate
24fps
Duration
4 to 30 seconds in one generation
Audio
Native, generated with the picture at no extra cost
Modes
Text to video, image to video, reference to video
Draft
480p preview, finished in 1080p within 7 days
Aspect ratios
21:9, 16:9, 4:3, 1:1, 3:4, 9:16, or auto
Reference images
Up to 30 per generation
Reference videos
Up to 10, 30 seconds combined
Audio inputs
Up to 10 per generation
Cost
From 184 credits per 5 seconds at 480p, 403 at 720p

Compared

Side by side with the models people weigh it against. Both run on the same plan.

Straight answers

What is Seedance 2.5?

Seedance 2.5 is ByteDance's long form video model, launched in July 2026. It generates up to 30 seconds of video with native audio in a single pass, and accepts up to 30 reference images, 10 reference videos and 10 audio inputs per request.

How is Seedance 2.5 different from Seedance 2.0?

The clip ceiling doubles from 15 to 30 seconds, and the reference budget goes from 9 images to 30, with 10 clips and 10 audio tracks. Both generate sound. The trade is resolution: 2.0 reaches 4K, 2.5 stops at 1080p.

Does Seedance 2.5 do 1080p or 4K?

1080p, yes. 4K, no: use Seedance 2.0 for that. The economical habit is to draft at 480p and finish only the take you keep in 1080p.

How much does Seedance 2.5 cost?

From 184 credits per 5 seconds at 480p, 403 at 720p and 970 at 1080p, scaling with length. A full 30 second take costs six times the five second rate, and the exact figure is shown before you generate.

Can it keep the same character across a whole clip?

That is what the 30 image reference budget is for. Pin a face from several angles and it holds across the full 30 seconds, which is the length at which weaker models start drifting.

Is Seedance 2.5 included in my plan?

On Starter and up, yes. Every model on APImage is priced in the same credits out of the same pool, and new models never need a separate subscription.

How do I use it?

Open the video studio and pick Seedance 2.5. Upload your references. Up to 30 images, 10 clips and 10 audio files, addressed from the prompt as @Image1, @Video1 and @Audio1. Write the scene, including what you want to hear as well as what you want to see. Set the length anywhere up to 30 seconds and generate. Turn on Draft first to preview at 480p, then finish the keeper in 1080p.

Seedance 2.5
is live.

Generate with Seedance 2.5
From 184 credits per 5 secondsOne credit poolNo per-model surchargeAPI and MCP