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/bytedance-seed/seedance-2.5

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ByteDance Seed: Seedance 2.5

Seedance 2.5 is ByteDance's next-generation multimodal audio-video generation model designed for long-form storytelling, precise reference control, professional video editing, and synchronized audio-video creation. It supports text, image, video, and audio references, with videos up to 30 seconds per generation.

Modetext、image、audio、video → video
Input price$0.2055855 per M tokens
Output price—
Context length
Listed at2026-07-31T00:00:00Z

ByteDance Seed

Latency—
Throughput—
Upload rate—
Context length—
Max output—
Input price$0.2055855per second
Output price—per second
Cache read—per second
Cache write—per second

Performance

Avg TPS—
Avg latency—
Avg success rate—
TPS—
TTFT—
Latency—
Success rate—

Success rate

Speed

Code Example

curl ${API_BASE_URL}/v1/contents/generations/tasks \
  -H "Authorization: Bearer <YOUR_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedance-2.5",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

Replace <YOUR_API_KEY> with the API key generated on your token management page.

Authentication

All requests must include the Authorization: Bearer <TOKEN> header.

Endpoint Path

POST
video-generation

Supported Parameters

ParameterTypeDefaultDescription
string720pVideo output resolution. Supported values: 480p, 720p. Default: 720p.
integer5Video duration in seconds. Seedance 2.5 supports durations from 4 to 30 seconds.
string16:9Video aspect ratio. Supported values: 16:9, 4:3, 1:1, 3:4, 9:16, 21:9, adaptive.
booleantrueWhether to generate synchronized audio. true generates video with audio; false generates silent video.
booleanfalseWhether to add a watermark to the generated video. false disables watermarking; true enables it.
booleanfalseWhether to return the final frame of the generated video as an image. Useful for video continuation or multi-shot workflows.

Rate Limits

GroupRPMTPMRPD

RPM = requests per minute, TPM = tokens per minute, RPD = requests per day. Limits apply by token group.

Pricing

ProviderBilling typePrice summary
Doubao0%
Per second
Input price$0.2055855per second
Completion price$—per second
Cache read price$—per second
Cache write price$—per second
Doubao0%
Per second
Input price$0.2055855per second
Completion price$—per second
Cache read price$—per second
Cache write price$—per second
Doubao0%
Per second
Input price$0.2055855per second
Completion price$—per second
Cache read price$—per second
Cache write price$—per second
Doubao0%
Per second
Input price$0.2055855per second
Completion price$—per second
Cache read price$—per second
Cache write price$—per second