Question 1

What is Seedance 2.5?

Accepted Answer

Seedance 2.5 is ByteDance's next-generation video model. It generates up to 30 seconds of native single-shot video, accepts up to 50 multimodal references (30 images, 10 video, and 10 audio), and adds native audio with support for 10+ languages, building on the Seedance 2.0 line. It is available on Morphic now.

Question 2

Is Seedance 2.5 available?

Accepted Answer

Yes. Seedance 2.5 has rolled out and is available on Morphic now: pick it in the prompt bar, write your shot as a brief, attach any references, and generate. The specs on this page are ByteDance's launch numbers; independent benchmarks are still to come.

Question 3

How is Seedance 2.5 different from Seedance 2.0?

Accepted Answer

The headline change is length: up to 30 seconds of native single-shot video, versus the few-second clips typical today. Seedance 2.5 also takes far more references (up to 50: 30 images, 10 video clips, and 10 audio, against Seedance 2.0's 9 images and 3 audio/video clips), adds an audio-only reference for lip-sync and beat-matching, strengthens in-clip editing and extension, and adds native support for 10+ languages.

Question 4

How long can Seedance 2.5 videos be?

Accepted Answer

Seedance 2.5 generates up to 30 seconds in a single native pass, up from 15 seconds on Seedance 2.0. That is a notable jump over most current models, which top out at a few seconds to roughly a dozen, and it covers full ad spots and short scenes in one generation. You can also extend a finished clip, adding footage to the front or back of it, so a scene can run longer without cutting separate shots together.

Question 5

What resolution does Seedance 2.5 support?

Accepted Answer

Seedance 2.5 generates natively at 1080p, a full 1920x1080 frame rendered directly rather than upscaled, up from 720p at launch. It also takes reference inputs of up to 4K for images and 480p to 4K for video clips.

Question 6

Can Seedance 2.5 edit a video I already have?

Accepted Answer

Yes. Seedance 2.5 edits an existing clip at region level: attach the video, then say what to change. It can swap the subject, add or remove an object, redraw part of the frame, or replace the music, and the rest of the shot stays as it was. An edit inherits the source clip's aspect ratio and length rather than letting you set them, and the clip you attach has to run 4 to 30 seconds.

Question 7

How do I extend a video in Seedance 2.5?

Accepted Answer

Attach the clip and ask Seedance 2.5 to extend it, saying which direction you mean. It can continue past the last frame, generate the moment before the first frame, or build a transition that bridges two clips, keeping the character, rhythm, and style intact. Unlike an edit, an extend lets you set how many seconds of new footage to add.

Question 8

What is the difference between edit and extend in Seedance 2.5?

Accepted Answer

Edit changes what happens inside a clip you already have, while extend adds new footage before or after it. Reach for edit when the shot is right but one element is wrong, and extend when the shot is right but too short. Both run from the same Reference to Video operation on Morphic, and you can pin either one with the Task Type setting so the model does not read your intent as a fresh generation.

Question 9

Will there be a Seedance 2.5 Pro or Turbo tier?

Accepted Answer

ByteDance has shipped tiers like Seedance 2.0 Fast and Seedance 2.0 Mini alongside its main models before, so Pro or Turbo style variants of Seedance 2.5 are likely to follow. We'll add them here once they're announced.

Seedance 2.5 AI Video Model

Key features

30-second native clips

Up to 50 references

Edit a clip in place

Extend a clip

Audio-only reference

Native 1080p output

Technical specifications

Use cases

Longer-form ad spots

Short drama and skits

Film and TV previz

Reference-led continuity

Fixing a take you like

Stretching a short clip

Audio-driven scenes

Prompt examples

Long-form ad

Short drama

Previz sequence

Reference continuity

Localized title card

Slow-motion nature

Simple pricing

FAQs

More about Seedance 2.5 AI Video Model

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