Veo 3.1

High-quality video generation with text-to-video, first/last frame, and reference image modes

Endpoints

Method	Endpoint	Description
POST	`/api/v1/generateTask/veo-3-1`	Create generation task
GET	`/api/v1/statusTask/veo-3-1`	Query task status

Authentication

All requests require an API Key in the header:

Authorization: Bearer YOUR_API_KEY

Request Body

{
  "request_type": "async",
  "callback_url": "https://...",
  "provider": "auto",
  "input": {
    "mode": "quality",
    "prompt": "...",
    "generationType": "TEXT_2_VIDEO",
    "aspect_ratio": "16:9",
    "image_urls": ["..."],
    "watermark": "",
    "seed": 1234
  }
}

Parameters

Parameter

Required

Default

Description

request_typestring

—

async

async (polling) or callback (webhook)

callback_urlstring

✱

—

Callback URL, required when request_type=callback

providerstring

—

auto

Routing strategy: auto, value, or official

inputobject

✓

—

Model input parameters

Generation Types:

TEXT_2_VIDEO — Pure text-to-video
FIRST_AND_LAST_FRAMES_2_VIDEO — First/last frame to video, requires image_urls (max 2)
REFERENCE_2_VIDEO — Reference image to video, requires fast mode, image_urls (max 3), aspect_ratio must be 16:9

Mode Options:

quality — High quality mode
fast — Fast generation mode

Example

Text-to-Video (TEXT_2_VIDEO)

curl -X POST "https://api.apixo.ai/api/v1/generateTask/veo-3-1" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "input": {
      "mode": "quality",
      "prompt": "a cinematic flyover of a futuristic city at sunrise",
      "generationType": "TEXT_2_VIDEO",
      "aspect_ratio": "16:9"
    }
  }'

First/Last Frame to Video (FIRST_AND_LAST_FRAMES_2_VIDEO)

curl -X POST "https://api.apixo.ai/api/v1/generateTask/veo-3-1" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "callback",
    "callback_url": "https://your-server.com/callback",
    "input": {
      "mode": "quality",
      "prompt": "a calm ocean turning into a storm",
      "generationType": "FIRST_AND_LAST_FRAMES_2_VIDEO",
      "image_urls": [
        "https://example.com/frame_start.jpg",
        "https://example.com/frame_end.jpg"
      ],
      "aspect_ratio": "9:16"
    }
  }'

Reference Image to Video (REFERENCE_2_VIDEO)

curl -X POST "https://api.apixo.ai/api/v1/generateTask/veo-3-1" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "input": {
      "mode": "fast",
      "prompt": "turn this sequence into a dynamic action shot",
      "generationType": "REFERENCE_2_VIDEO",
      "image_urls": [
        "https://example.com/ref1.jpg",
        "https://example.com/ref2.jpg"
      ],
      "aspect_ratio": "16:9"
    }
  }'

Response

POST /api/v1/generateTask/veo-3-1

Returns taskId on success for subsequent status queries.

Success:

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

Error:

{
  "code": 400,
  "message": "Insufficient credits",
  "data": null
}

GET /api/v1/statusTask/veo-3-1

Query task execution status and results via taskId.

curl -X GET "https://api.apixo.ai/api/v1/statusTask/veo-3-1?taskId=task_12345678" \
  -H "Authorization: Bearer YOUR_API_KEY"

Success:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "success",
    "resultJson": "{\"resultUrls\":[\"https://r2.apixo.ai/video.mp4\"]}",
    "createTime": 1767965610929,
    "completeTime": 1767965730929,
    "costTime": 120000
  }
}

Failed:

{
  "code": 200,
  "message": "success",
  "data": {
    "taskId": "task_12345678",
    "state": "failed",
    "failCode": "CONTENT_VIOLATION",
    "failMsg": "Content does not meet safety guidelines"
  }
}

Status Response Fields

Field	Type	Description
`taskId`	string	Unique task identifier
`state`	string	`pending` `processing` `success` `failed`
`resultJson`	string	JSON containing `resultUrls` array (on success)
`failCode`	string	Error code (on failure)
`failMsg`	string	Error message (on failure)
`createTime`	integer	Task creation timestamp (ms)
`completeTime`	integer	Task completion timestamp (ms)
`costTime`	integer	Processing duration (ms)

Error Codes

Code	Description
400	Invalid parameters or request error
401	Invalid or missing API Key
429	Rate limit exceeded

Fail Code	Description
`CONTENT_VIOLATION`	Content violates safety guidelines
`INVALID_IMAGE_URL`	Cannot access provided image URL

Rate Limits

Limit	Value
Requests	10000 / minute
Concurrent tasks	1000

Exceeding limits returns 429 error. Wait and retry.

Tips

Generation time: Average ~2 minutes. Submit task, wait 90 seconds, then poll every 5 seconds.
Callback mode: Video generation takes time, strongly recommend using callback mode.
Video expiration: Result URLs are valid for 15 days. Download promptly.
Content moderation: Prompts must comply with content safety guidelines.
REFERENCE_2_VIDEO constraints: This type only supports fast mode and aspect_ratio must be 16:9.
Image formats: image_urls supports JPG, PNG, WebP, max 10MB per image.

Veo 3.1

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