Vidu · Model API

Vidu Q4 API Pricing

Vidu Q4 API with VezAPI. Explore model capabilities, credit pricing, request parameters, and integration examples.

Image to Video

Vidu Q4 API documentation

Integrate Vidu Q4 with your VezAPI key. The operations below share the same authentication and account balance.

Base URL: https://api.vezapi.com
Send Authorization: Bearer YOUR_VEZAPI_KEY. Use a unique Idempotency-Key for each submission; reuse it only when checking the same request.

Vidu Q4 Image To Video

POST/api/v1/jobs/createTask

Model IDs: vidu-q4/image-to-video

Parameter	Type	Description & constraints
`model` required	`string`	The model name used for generation. This endpoint must use `vidu-q4/image-to-video`. Values: `"vidu-q4/image-to-video"` Default: `"vidu-q4/image-to-video"`
`callBackUrl` optional	`string`	The URL to receive generation task completion updates. Optional but recommended for production use. The system POSTs the task status and results to this URL when generation completes.
`input` required	`object`	Input parameters for the generation task.
`input.prompt` optional	`string`	Text description of the motion and scene. Optional. Up to 20,000 characters. `maxLength: 20000`
`input.duration` optional	`integer`	Video length in seconds. Integer from 3 to 16. Default: `5` `minimum: 3` `maximum: 16`
`input.resolution` optional	`string`	Output resolution. Values: `"540p", "720p", "1080p", "2k", "4k"` Default: `"720p"`
`input.audio` optional	`boolean`	Generate synchronized audio (dialogue and sound effects). Set false for a silent video. Default: `true`
`input.image_url` required	`string`	First-frame image URL (http/https). JPG, JPEG, PNG or WEBP, up to 50 MB. The video inherits this image's aspect ratio. `minLength: 1`

Request example

curl -X POST 'https://api.vezapi.com/api/v1/jobs/createTask' \
  -H 'Authorization: Bearer YOUR_VEZAPI_KEY' \
  -H 'Idempotency-Key: your-unique-request-id' \
  -H 'Content-Type: application/json' \
  -d '{
  "model": "vidu-q4/image-to-video",
  "input": {
    "prompt": "Your prompt",
    "duration": 5,
    "resolution": "720p",
    "image_url": "Your prompt"
  }
}'

Responses and errors

HTTP 200

Request successful

Parameter	Type	Description & constraints
`code` optional	`integer`	Status code of the request. The HTTP status is 200 even when the request fails, so always check this field: 200 means success; any other value means the request failed and msg describes the reason. Common values: 401 invalid or missing API key; 402 insufficient credits; 429 rate limit exceeded; 422 or 500 the request could not be processed (read msg and check your parameters before retrying). Values: `200, 400, 401, 402, 404, 422, 429, 455, 500, 501, 505`
`msg` optional	`string`	Error message when code != 200
`data` optional	`object`
`data.taskId` optional	`string`	Task ID, can be used with [Get Task Details](/market/common/get-task-detail) endpoint to query task status

HTTP 500

Server error.

Parameter	Type	Description & constraints
`code` required	`integer`	Response status code - 200: Success - Request has been processed successfully - 401: Unauthorized - Authentication credentials are missing or invalid - 402: Insufficient Credits - Account does not have enough credits to perform the operation - 404: Not Found - The requested resource or endpoint does not exist - 408: Timeout - No result has been returned for over 10 minutes. - 422: Validation Error - The request parameters failed validation checks - 429: Rate Limited - Request limit has been exceeded for this resource - 455: Service Unavailable - System is currently undergoing maintenance - 500: Server Error - An unexpected error occurred while processing the request - 501: Generation Failed - Content generation task failed - 505: Feature Disabled - The requested feature is currently disabled
`msg` required	`string`	Response message, error description when failed
`data` required	`object`

Vidu Q4 Reference To Video

POST/api/v1/jobs/createTask

Model IDs: vidu-q4/reference-to-video

Parameter	Type	Description & constraints
`model` required	`string`	The model name used for generation. This endpoint must use `vidu-q4/reference-to-video`. Values: `"vidu-q4/reference-to-video"` Default: `"vidu-q4/reference-to-video"`
`callBackUrl` optional	`string`	The URL to receive generation task completion updates. Optional but recommended for production use. The system POSTs the task status and results to this URL when generation completes.
`input` required	`object`	Input parameters for the generation task.
`input.prompt` required	`string`	Text description of the video. Refer to inputs by order, e.g. "the man in reference image 2 says ... using reference audio 1". Up to 20,000 characters. `minLength: 1` `maxLength: 20000`
`input.duration` optional	`integer`	Video length in seconds. Integer from 3 to 16. Default: `5` `minimum: 3` `maximum: 16`
`input.resolution` optional	`string`	Output resolution. Values: `"540p", "720p", "1080p", "2k", "4k"` Default: `"720p"`
`input.audio` optional	`boolean`	Generate synchronized audio (dialogue and sound effects). Set false for a silent video. Default: `true`
`input.reference_image_urls` required	`array`	Reference image URLs (http/https), 1 to 15. JPG, JPEG, PNG or WEBP. `minItems: 1` `maxItems: 15`
`input.reference_audio_urls` optional	`array`	Optional reference audio URLs (http/https), up to 3. MP3 only, each 3-12 seconds and up to 50 MB. `maxItems: 3`
`input.aspect_ratio` optional	`string`	Output aspect ratio. Values: `"16:9", "9:16", "1:1", "4:3", "3:4"` Default: `"16:9"`

Request example

curl -X POST 'https://api.vezapi.com/api/v1/jobs/createTask' \
  -H 'Authorization: Bearer YOUR_VEZAPI_KEY' \
  -H 'Idempotency-Key: your-unique-request-id' \
  -H 'Content-Type: application/json' \
  -d '{
  "model": "vidu-q4/reference-to-video",
  "input": {
    "prompt": "Your prompt",
    "duration": 5,
    "resolution": "720p",
    "reference_image_urls": [
      "Your prompt"
    ],
    "aspect_ratio": "16:9"
  }
}'

Responses and errors

HTTP 200

Request successful

Parameter	Type	Description & constraints
`code` optional	`integer`	Status code of the request. The HTTP status is 200 even when the request fails, so always check this field: 200 means success; any other value means the request failed and msg describes the reason. Common values: 401 invalid or missing API key; 402 insufficient credits; 429 rate limit exceeded; 422 or 500 the request could not be processed (read msg and check your parameters before retrying). Values: `200, 400, 401, 402, 404, 422, 429, 455, 500, 501, 505`
`msg` optional	`string`	Error message when code != 200
`data` optional	`object`
`data.taskId` optional	`string`	Task ID, can be used with [Get Task Details](/market/common/get-task-detail) endpoint to query task status

HTTP 500

Server error.

Parameter	Type	Description & constraints
`code` required	`integer`	Response status code - 200: Success - Request has been processed successfully - 401: Unauthorized - Authentication credentials are missing or invalid - 402: Insufficient Credits - Account does not have enough credits to perform the operation - 404: Not Found - The requested resource or endpoint does not exist - 408: Timeout - No result has been returned for over 10 minutes. - 422: Validation Error - The request parameters failed validation checks - 429: Rate Limited - Request limit has been exceeded for this resource - 455: Service Unavailable - System is currently undergoing maintenance - 500: Server Error - An unexpected error occurred while processing the request - 501: Generation Failed - Content generation task failed - 505: Feature Disabled - The requested feature is currently disabled
`msg` required	`string`	Response message, error description when failed
`data` required	`object`

Task status and callbacks

For asynchronous tasks, keep the returned taskId. Query GET /api/v1/jobs/recordInfo?taskId=... or provide callBackUrl when creating the task. Only the account that created a task can access it or derive new resources from it.

A timeout can mean the submission was accepted. Inspect the existing request in your dashboard; do not create another task automatically. Callback delivery is retried and may arrive more than once. Deduplicate with X-VezAPI-Event-Id.

Files, logs and billing

Generated media normally follows a 14-day provider lifetime; uploaded files expire after 24 hours. Save the files you need before expiration. VezAPI streams registered files without keeping a permanent media library. Request logs are retained for two calendar months.

Credits are reserved before submission. Final deductions match actual discounted consumption one for one. Unknown usage pauses new paid requests. If available funds cannot cover final usage while protecting other reservations, settlement stays pending until funded; model usage cannot make the wallet negative. Time-based inputs require server-side metadata reads; a failed read prevents submission.

Open full documentation →

Send a request using your VezAPI key. Successful generations use your account credits.

VezAPI API Key

POST/api/v1/jobs/createTask

Request body

{
  "model": "vidu-q4/image-to-video",
  "input": {
    "prompt": "Your prompt",
    "duration": 5,
    "resolution": "720p",
    "image_url": "Your prompt"
  }
}

Response

Your response will appear here.

Vidu Q4 API pricing

Rates below are reference estimates; final deductions equal actual discounted consumption, one for one. At the standard pack rate, 1,000 credits ≈ $10. Larger packs reduce the effective credit price.

Specification	Credits	Unit	USD reference
Vidu Q4, reference-to-video, 4k	62.4	per second	$0.624
Vidu Q4, reference-to-video, 2k	30.4	per second	$0.304
Vidu Q4, reference-to-video, 1080p	19.2	per second	$0.192
Vidu Q4, reference-to-video, 720p	15.2	per second	$0.152
Vidu Q4, reference-to-video, 540p	7.2	per second	$0.072
Vidu Q4, image-to-video, 4k	62.4	per second	$0.624
Vidu Q4, image-to-video, 2k	30.4	per second	$0.304
Vidu Q4, image-to-video, 1080p	19.2	per second	$0.192
Vidu Q4, image-to-video, 720p	15.2	per second	$0.152
Vidu Q4, image-to-video, 540p	7.2	per second	$0.072