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ModelVideo generation

Seedance 2.5

Long-form storytelling and multimodal reference generation with audio.

ByteDance's newest Seedance route, built for long-form storytelling, multimodal reference-based generation, video editing, and video extension. It accepts up to 50 image, video, and audio reference assets, renders clips up to 30 seconds, and supports multilingual audiovisual generation.

Video routes are billed per second of output. Rates follow OpenRouter's token formula, tokens = height x width x duration x 24 / 1024, and generating audio does not change the rate. Passing a video as reference uses a lower rate.

Vision
Modalities
TextImageVideoAudioVideo
Price
from $0.1028/second
Released
Aug 7, 2026

MODEL ID

seedance-2.5

Resolution

480p / 720p

Duration

4-30s

Aspect ratio

16:9 / 4:3 / 1:1 / 3:4 / 9:16 / 21:9

Audio

Included

Playground

Send a real video generation request with your Felo API key, then watch the task until the signed output URL is ready.

POST /api/v1/videos/generations
Generate audio

Prefer the full reference?

Open the Model API reference for every parameter, response field, and code sample.

Open Model API reference

Video generation pricing

ResolutionPer secondPer second (with video input)
480p$0.1028$0.06149
720p$0.2311$0.1382

Video routes are billed per second of output. Rates follow OpenRouter's token formula, tokens = height x width x duration x 24 / 1024, and generating audio does not change the rate. Passing a video as reference uses a lower rate.

Per million tokens: $10.70 / $6.40 (with video input)

Video Quick Start

Submit an asynchronous video task, poll until it succeeds, then download the signed output URL.

Submit a video task

curl -X POST "https://openapi.felo.ai/api/v1/videos/generations" \
  -H "Authorization: Bearer $FELO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2.5",
    "prompt": "a cinematic drone shot over a coastal city at sunrise",
    "resolution": "720p",
    "duration": 5,
    "aspect_ratio": "16:9",
    "generate_audio": true
  }'

Poll the task

curl "https://openapi.felo.ai/api/v1/videos/generations/$TASK_ID" \
  -H "Authorization: Bearer $FELO_API_KEY"

Download the output

# Poll until "status" is "succeeded", then download the signed URL.
curl -o output.mp4 "$OUTPUT_URL"

Frequently asked questions

What is Seedance 2.5?

ByteDance's newest Seedance route, built for long-form storytelling, multimodal reference-based generation, video editing, and video extension. It accepts up to 50 image, video, and audio reference assets, renders clips up to 30 seconds, and supports multilingual audiovisual generation.

How much does Seedance 2.5 cost?

Seedance 2.5 supports $0.1028/second (480p) – $0.2311/second (720p), with video input: $0.06149/second (480p) – $0.1382/second (720p), $10.70/M video tokens (with audio), $6.40/M video tokens (with video input).

What resolutions, clip lengths, and aspect ratios does Seedance 2.5 support?

Seedance 2.5 supports 480p, 720p — 4–30s, 16:9, 4:3, 1:1, 3:4, 9:16, 21:9 — Text to video, First and last frame, Multimodal reference, and produces a matching audio track.

What inputs and outputs does Seedance 2.5 support?

Seedance 2.5 accepts Text, Image, Video, Audio and returns Video.

What other video models does ByteDance have?

Seedance 2.0 Mini, Seedance 2.0, Seedance 2.0 Fast are other video models from ByteDance.

When was Seedance 2.5 released?

Seedance 2.5 — August 7, 2026.

More models from ByteDance

Compare the other Seedance video routes available on Felo API Platform.

ByteDance

Seedance 2.0 Mini

ByteDanceVideoseedance-2.0-mini

The most affordable Seedance route, supporting text-to-video, first and last frame control, and multimodal reference-to-video with image, video, and audio inputs. It renders 480p and 720p clips between 4 and 15 seconds.

Low-cost videoHigh-volume generationReference-to-videoSocial clips

Resolution

480p / 720p

Duration

4-15s

Per second

$0.03363/s

Seedance 2.0

ByteDanceVideoseedance-2.0

ByteDance's flagship Seedance route for text-to-video, first and last frame control, and multimodal reference-to-video. It is particularly strong at preserving character consistency, visual style, and camera movement from reference material, and it is the only Seedance route here that renders up to 4K.

Text to videoCharacter consistencyStyle transfer4K output

Resolution

480p / 720p / 1080p / 4K

Duration

4-15s

Per second

$0.06725/s

Seedance 2.0 Fast

ByteDanceVideoseedance-2.0-fast

A faster, lower-cost Seedance route for text-to-video, first and last frame control, and multimodal reference-to-video. It prioritizes generation speed and cost over maximum output quality, and renders up to 720p.

Fast iterationCost-sensitive videoReference-to-videoDraft renders

Resolution

480p / 720p

Duration

4-15s

Per second

$0.04035/s