Veo 3.1 T2V

[Core Function] Veo 3.1 T2V is Google’s state-of-the-art cinematic text-to-video engine. [Strengths] It natively generates 4K professional-grade video output with natively synchronized audio and supports complex camera movements. [Best For] Highly recommended for: high-end creative storytelling, cinematic short films, and experimental video production with sound. [Limitations] Do NOT use this model if you need instant/real-time generation, as 4K video rendering takes time. [Routing] Use this model by default for all high-quality text-to-video requests on the Google platform.

POST /google/veo-3.1-t2v

cURL

basic

curl --request POST \
  --url https://api.modellix.ai/api/v1/google/veo-3.1-t2v \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "prompt": "A majestic eagle soaring over snow-capped mountain peaks at sunrise"
}
'

200

{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-t2v001",
    "model_id": "google/veo-3.1-t2v",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-t2v001"
    }
  }
}

Authorizations

Authorization · string · header · required

API Key authentication. Format: Bearer YOUR_API_KEY.

Body

application/json

Veo 3.1 and Veo 3.1 Fast text-to-video request. Supports prompt, negativePrompt, aspectRatio, duration, resolution (up to 4k), and personGeneration.

prompt · string · required

Video description text

Minimum string length: 1

Example:

"A majestic eagle soaring over snow-capped mountain peaks at sunrise"

negativePrompt · string

Text describing what to avoid in the generated video.

Example:

"blurry, low quality, distorted"

aspectRatio · enum<string> · default: 16:9

Video aspect ratio

Available options: 16:9, 9:16

Example:

"16:9"

duration · enum<string>

Video duration in seconds (string type)

Available options: 4, 6, 8

Example:

"8"

resolution · enum<string>

Video resolution. Note: 1080p and 4k are only available for 8-second duration.

Available options: 720p, 1080p, 4k

Example:

"1080p"

personGeneration · enum<string>

Person generation policy

Available options: allow_all

Example:

"allow_all"

Response

200

application/json

Task submitted successfully

code · integer · required

Response code, 0 indicates success

Example:

0

message · string · required

Response message

Example:

"success"

data · object · required

Detailed data about the submitted asynchronous task.

Show child attributes