Bytedance Seedance 2.5

video Bytedance 82 tokens per second $0.005 per token

Pricing

Option	Tokens	Unit	≈ USD
480p with video	23	per second	$0.1150
480p no video	37	per second	$0.1850
720p with video	50	per second	$0.2500
720p no video	82	per second	$0.4100
1080p with video	124	per second	$0.6200
1080p no video	206	per second	$1.0300

The price is held when the task is created and settled to actual consumption when it completes; a failed task releases the hold.

How to order

Clips are ordered for a video session of the project; the model id goes into the order and must be one of the project's GET /projects/{id}/video-models.

POST https://app.video-blade.com/api/v1/projects/{id}/video-sessions/{item_id}/generate
X-API-Key: vb_…
Content-Type: application/json

{"prompt": "…", "model": "bytedance-seedance-2-5", "duration": …, "start_url": "https://…"}
→ 202 {"generation_id": "…", "status": "running", "tokens": …}

Field lists and refusal codes — API reference.

Model parameters

What the model itself understands; the ordering calls above take their own fields and pass these on.

Name	Type	Required	Description
`prompt`	string	optional	The text prompt used to generate the video.. ( Max length: 30000 characters)
`first_frame_url`	string	optional	First frame image url or asset://{assetId} (for example: asset://asset-20260404242101-76djj) Cannot be used simultaneously with reference_image_urls, reference_video_urls, or reference_audio_urls.
`last_frame_url`	string	optional	End frame image url or asset://{assetId} (for example: asset://asset-20260404242101-76djj) last_frame_url cannot be passed alone; first_frame_url must be provided together with it.
`reference_image_urls`	array	optional	Enter a list of image URLs or asset://{assetId} (for example: asset://asset-20260404242101-76djj). Single image requirements: Format: jpeg, png, webp, bmp, tiff, gif. Aspect ratio (width/height): (0.4, 2.5) Width and height (px): (300, 6000) Size: Single image less than 30 MB. Maximum number of files: The sum of the number of frames at the beginning and end must not exceed 30. Mutually exclusive with the first/last-frame scenario;
`reference_video_urls`	array	optional	Enter a list of video URLs or asset://{assetId} (for example: asset://asset-20260404242101-76djj) . Single video requirements: Video format: mp4, mov. Resolution: 480p, 720p Dimensions: Aspect ratio (width/height): [0.4, 2.5] Width/height (px): [300, 6000] Total pixels: [640×640=409600, 834×1112=927408], i.e., the product of width and height must meet the range requirement of [409600, 927408]. Size: Single video not exceeding 200 MB. Frame rate (FPS): [24, 60] Single video duration: [2, 30] seconds; Mutually exclusive with the first/last-frame scenario; Total duration of reference videos must
`reference_audio_urls`	array	optional	Enter a list of audio URLs or asset://{assetId} (for example: asset://asset-20260404242101-76djj) . Single audio requirements: Format: wav, mp3 Size: Single audio file size not exceeding 15 MB. Single audio duration: [2, 30] seconds; Mutually exclusive with the first/last-frame scenario; Total duration of reference videos must not exceed 30 seconds.
`return_last_frame`	boolean	optional	Whether to return the last frame of the video. When draft=true, this parameter cannot be set to true. Default: `False`
`generate_audio`	boolean	optional	Whether to generate audio for the video. - true: Generate with audio (higher cost) - false: Generate without audio Note: Enabling audio will increase the generation cost Default: `True`
`resolution`	string	optional	Video resolution - 480p for faster generation, 720p for balance. Values: `480p`, `720p`, `1080p` Default: `720p`
`aspect_ratio`	string	optional	Video aspect ratio configuration. Values: `1:1`, `4:3`, `3:4`, `16:9`, `9:16`, `21:9`, `adaptive` Default: `adaptive`
`duration`	integer	optional	Video duration in 4-30 seconds. Special values -1: Pass -1 for automatic duration selection — the model picks a suitable duration itself (for video-editing tasks, it matches the input video's length; for other task types, it selects within the valid range), instead of you specifying an exact value. Default: `5`
`output_format`	string	optional	Video output format. Values: `mp4`, `mov` Default: `mp4`
`web_search`	boolean	optional	Enable online search.
`nsfw_checker`	boolean	optional	Defaults to false. You can set it to false based on your needs. If set to false, our content filtering will be disabled, and all results will be returned directly by the model itself. Note: There is no guarantee that everything can be filtered out; if you are not satisfied with the results, you will need to make your own arrangements.