Vidu Q3

Overview

Vidu Q3 is a per-second video generation model for text-to-video, image-to-video, and Turbo image-to-video workflows. Use this page when you are ready to call the API after trying the model in the APIXO playground.

Capability	Value
Model ID	`vidu-q3`
Modes	`text-to-video`, `image-to-video`, `turbo-image-to-video`
Prompt length	1-5000 characters
Duration	Any integer from `1` through `16` seconds
Resolutions	`540p`, `720p`, `1080p`
Text-mode aspect ratios	`16:9`, `9:16`, `4:3`, `3:4`, `1:1`
Text-mode styles	`general`, `anime`
Reference images	1-2 URLs for image modes
Output	MP4 video URL array in `resultJson.resultUrls`

Endpoint and authentication

Base URL:

https://api.apixo.ai/api/v1

Method	Endpoint	Purpose
`POST`	`/generateTask/vidu-q3`	Submit a generation task
`GET`	`/statusTask/vidu-q3?taskId={taskId}`	Poll task status and retrieve results

All requests require your APIXO API key:

Authorization: Bearer YOUR_API_KEY

Submit requests also require:

Content-Type: application/json

Copy-paste async quickstart

This minimal request submits a Standard text-to-video task and returns a taskId.

curl -X POST "https://api.apixo.ai/api/v1/generateTask/vidu-q3" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "input": {
      "mode": "text-to-video",
      "prompt": "a cinematic flyover of a futuristic city at sunrise",
      "resolution": "720p",
      "duration": 8,
      "style": "general",
      "aspect_ratio": "16:9",
      "sound": true,
      "bgm": true
    }
  }'

Successful response:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678"
  }
}

Save the taskId; you need it to poll for the final video.

Poll for result

curl -X GET "https://api.apixo.ai/api/v1/statusTask/vidu-q3?taskId=task_12345678" \
  -H "Authorization: Bearer YOUR_API_KEY"

Processing response:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "processing",
    "createTime": 1767965610929
  }
}

Success response:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "success",
    "resultJson": "{\"resultUrls\":[\"https://file.apixo.ai/video.mp4\"]}",
    "createTime": 1767965610929,
    "completeTime": 1767965730929,
    "costTime": 120000
  }
}

Failed response:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "failed",
    "failCode": "PromptInvalid",
    "failMsg": "Prompt is invalid or rejected by upstream service",
    "createTime": 1767965610929,
    "completeTime": 1767965620132
  }
}

Parse resultJson after state becomes success:

const payload = JSON.parse(data.resultJson);
const videoUrls = payload.resultUrls;

Request body

Text-to-video

{
  "request_type": "async",
  "input": {
    "mode": "text-to-video",
    "prompt": "a polished app launch teaser with a glowing phone rotating above a reflective surface",
    "resolution": "720p",
    "duration": 8,
    "style": "general",
    "aspect_ratio": "16:9",
    "movement": "auto",
    "sound": true,
    "bgm": true,
    "seed": 1234
  }
}

Single-image animation

{
  "request_type": "async",
  "input": {
    "mode": "image-to-video",
    "prompt": "make this product photo come alive with subtle camera motion",
    "resolution": "1080p",
    "duration": 4,
    "image_urls": [
      "https://example.com/start.jpg"
    ],
    "sound": true,
    "bgm": true
  }
}

First-and-last-frame transition

{
  "request_type": "async",
  "input": {
    "mode": "image-to-video",
    "prompt": "transition smoothly from the first frame to the last frame",
    "resolution": "720p",
    "duration": 8,
    "image_urls": [
      "https://example.com/start.jpg",
      "https://example.com/end.jpg"
    ],
    "sound": true,
    "bgm": true
  }
}

Parameters

string

default:"async"

Result delivery mode. Omit this field or use async for polling with statusTask, or use callback for webhook delivery.

string

Required when request_type is callback. Must be a public URL that can receive the final task payload. See Webhooks.

object

required

Vidu Q3 input parameters.

Show properties

string

required

Generation mode. Supported values: text-to-video, image-to-video, turbo-image-to-video.

string

required

Text prompt describing the desired video. Must be non-empty after trimming and must not exceed 5000 characters.

string

required

Output resolution. Supported values: 540p, 720p, 1080p.

integer

required

Output duration in seconds. Supports any integer from 1 through 16.

string

Text-mode style preset. Supported values: general, anime. Applies only to text-to-video.

string

default:"4:3"

Text-mode output aspect ratio. Supported values: 16:9, 9:16, 4:3, 3:4, 1:1. Applies only to text-to-video.

string[]

Required for image-to-video and turbo-image-to-video. Supports 1-2 image URLs. One image creates single-image animation; two images create a first-and-last-frame transition where the first URL is the start frame and the second URL is the end frame.

string

Motion amplitude. Supported values: auto, small, medium, large.

boolean

default:"true"

Whether to generate sound effects with the video.

boolean

default:"true"

Whether to generate background music with the video.

integer

Random seed. Supports integers from -1 through 2147483647.

Mode	Required media	Text controls	Billing tier
`text-to-video`	None	`style`, `aspect_ratio`	Standard
`image-to-video`	`image_urls` with 1-2 images	Not used	Standard
`turbo-image-to-video`	`image_urls` with 1-2 images	Not used	Turbo

Use public, directly accessible image URLs for image modes. The task is rejected if an image URL cannot be accessed or processed.

Response format

Submit task response

POST /generateTask/vidu-q3 returns a task ID when the task is accepted:

integer

API status code. 200 means the task was accepted.

string

Human-readable status message.

string

Unique task identifier used with the status endpoint.

Status response fields

string

Unique task identifier.

string

Current task state: pending, processing, success, or failed.

string

JSON string containing generated video URLs in resultUrls. Present when state is success.

string

Machine-readable failure code. Present when state is failed.

string

Human-readable failure message. Present when state is failed.

integer

Task creation timestamp in Unix milliseconds.

integer

Task completion timestamp in Unix milliseconds. Present after completion.

integer

Processing duration in milliseconds. Present after completion when timing data is available.

Webhook callback mode

Use callback mode when your backend should receive the final result automatically instead of polling.

curl -X POST "https://api.apixo.ai/api/v1/generateTask/vidu-q3" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "callback",
    "callback_url": "https://your-server.com/webhooks/apixo",
    "input": {
      "mode": "turbo-image-to-video",
      "prompt": "animate the reference image with a smooth handheld camera move",
      "resolution": "720p",
      "duration": 4,
      "image_urls": [
        "https://example.com/reference-image.jpg"
      ],
      "sound": true,
      "bgm": true
    }
  }'

The callback payload uses the same top-level shape as status polling with code, message, and data. Successful callbacks include the final state and resultJson. See Webhooks for delivery requirements and retry behavior.

Billing

Vidu Q3 is billed per second. The selected mode determines whether the task uses the Standard or Turbo rate, and resolution determines the per-second unit price.

total cost = unit price x duration

Mode group	Resolution	APIXO price
Standard: `text-to-video`, `image-to-video`	`540p`	`$0.07 / second`
Standard: `text-to-video`, `image-to-video`	`720p`	`$0.15 / second`
Standard: `text-to-video`, `image-to-video`	`1080p`	`$0.16 / second`
Turbo: `turbo-image-to-video`	`540p`	`$0.04 / second`
Turbo: `turbo-image-to-video`	`720p`	`$0.06 / second`
Turbo: `turbo-image-to-video`	`1080p`	`$0.08 / second`

For current route and market comparison pricing, see Pricing.

Latency and polling

Video generation is long-running. Typical Vidu Q3 processing time is about 60-120 seconds, but actual latency may vary by mode, duration, resolution, prompt complexity, reference image accessibility, route queue load, and storage transfer time.

Workload	Typical generation time	Recommended first poll	Poll interval
Short Turbo previews	60s-120s	60s after task creation	5s-10s
Standard text-to-video or image-to-video	60s-180s	60s-90s after task creation	5s-10s
Longer or 1080p jobs	2-4 minutes or longer	90s after task creation	10s

For production workloads, use callback mode to avoid frequent polling while video tasks run.

Result URLs are temporary. Download and store important outputs promptly after task completion. Rate limits and concurrency can vary by account, API key, and route. If you receive 429, slow down requests and retry with backoff. For account-level details, see System APIs.

Errors and troubleshooting

HTTP errors

Code	Meaning	What to do
`400`	Invalid request body, missing `input`, unsupported `mode`, empty or too-long `prompt`, invalid `resolution`, invalid `duration`, invalid `style`, invalid `aspect_ratio`, invalid `movement`, or invalid `image_urls`	Fix the request before retrying
`401`	Missing or invalid API key	Check the `Authorization` header
`402`	Insufficient balance or quota	Add balance or switch account/key
`403`	Key or route cannot access the model, or content was rejected	Check permissions and revise the prompt or input
`404`	Task not found when polling	Check the `taskId`
`429`	Rate limit or concurrency limit reached	Retry with exponential backoff
`500`	Server error or unknown task failure	Retry with backoff
`502`	Upstream service error	Retry with backoff
`504`	Upstream timeout	Retry or use callback mode for long-running jobs

Validation notes

Condition	Backend behavior
Missing `input`	Request fails before task creation.
Missing `mode`	Request fails before task creation.
Unsupported `mode`	Request fails before task creation. Supported values are `text-to-video`, `image-to-video`, and `turbo-image-to-video`.
Missing, non-string, or empty `prompt`	Request fails before task creation.
`prompt` longer than 5000 characters	Request fails before task creation.
Missing or unsupported `resolution`	Request fails before task creation. Supported values are `540p`, `720p`, and `1080p`.
Missing `duration`	Request fails before task creation.
`duration` outside `1` through `16`	Request fails before task creation.
Unsupported `style` in text modes	Request fails before task creation. Supported values are `general` and `anime`.
Unsupported `aspect_ratio` in text modes	Request fails before task creation. Supported values are `16:9`, `9:16`, `4:3`, `3:4`, and `1:1`.
Unsupported `movement`	Request fails before task creation. Supported values are `auto`, `small`, `medium`, and `large`.
Image mode without `image_urls`	Request fails before task creation.
Image mode with zero or more than two images	Request fails before task creation.
`image_urls` contains non-string items	Request fails before task creation.
`seed` outside `-1` through `2147483647`	Request fails before task creation.

Task failure codes

failCode is generated from APIXO’s mapped upstream error. Common values include:

Fail code	Meaning	What to do
`PromptInvalid`	Prompt was invalid or rejected by the upstream service	Rewrite the prompt and retry
`SensitiveContent`	Prompt or input/output content was rejected by safety checks	Change the prompt or reference image
`ImageFormatIncorrect`	Reference image format could not be processed	Use a public, direct image URL in a common image format
`RateLimited`	Upstream rate limit was reached	Retry with exponential backoff
`Timeout`	Upstream timeout	Retry later or use callback mode
`StreamError`	Upstream returned a `500`-class generation error	Retry with backoff
`Unknown error`	Upstream returned an unmapped failure	Retry with backoff or contact support with the `taskId`

See Error Codes for the full error reference.

Getting Started

Image Models

Video Models

Audio Models

Text & Utility Models

Overview

Endpoint and authentication

Copy-paste async quickstart

Poll for result

Request body

Text-to-video

Single-image animation

First-and-last-frame transition

Parameters

Response format

Submit task response

Status response fields

Webhook callback mode

Billing

Latency and polling

Errors and troubleshooting

HTTP errors

Validation notes

Task failure codes

​Overview

​Endpoint and authentication

​Copy-paste async quickstart

​Poll for result

​Request body

​Text-to-video

​Single-image animation

​First-and-last-frame transition

​Parameters

​Response format

​Submit task response

​Status response fields

​Webhook callback mode

​Billing

​Latency and polling

​Errors and troubleshooting

​HTTP errors

​Validation notes

​Task failure codes

​Related links

Overview

Endpoint and authentication

Copy-paste async quickstart

Poll for result

Request body

Text-to-video

Single-image animation

First-and-last-frame transition

Parameters

Response format

Submit task response

Status response fields

Webhook callback mode

Billing

Latency and polling

Errors and troubleshooting

HTTP errors

Validation notes

Task failure codes

Related links