Veo 3.1 Fast

Text-to-Video • Google • Proxied

A faster version of Veo 3.1 optimized for lower latency while maintaining high-quality video and audio output.

Model Info
Terms and License	link ↗
More information	link ↗

Usage

const response = await env.AI.run(
  'google/veo-3.1-fast',
  {
    prompt: 'A butterfly landing on a colorful flower in a garden',
    duration: '6s',
    aspect_ratio: '16:9',
    resolution: '720p',
    generate_audio: true,
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Response 200

Examples

Social Content — Quick vertical video for social media

const response = await env.AI.run(
  'google/veo-3.1-fast',
  {
    prompt:
      'Aesthetic morning routine: sun rays through curtains, coffee being poured',
    duration: '6s',
    aspect_ratio: '9:16',
    resolution: '720p',
    generate_audio: true,
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Response 200

Motion Graphics — Quick animated graphics

const response = await env.AI.run(
  'google/veo-3.1-fast',
  {
    prompt:
      'Glowing neon lines forming geometric patterns on a dark background',
    duration: '4s',
    aspect_ratio: '16:9',
    resolution: '720p',
    generate_audio: false,
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Response 200

Ambient Scene — Relaxing background video

const response = await env.AI.run(
  'google/veo-3.1-fast',
  {
    prompt:
      'Rain falling on a window with a blurred city skyline in the background at night',
    duration: '8s',
    aspect_ratio: '16:9',
    resolution: '720p',
    generate_audio: true,
  },
  {
    gateway: { id: 'default' },
  }
)
console.log(response)

Response 200

prompt

stringrequiredText prompt describing the video to generate

image_input

stringBase64-encoded reference image for i2v

duration

stringrequireddefault: 6senum: 4s, 6s, 8sVideo duration

aspect_ratio

stringrequireddefault: 16:9enum: 16:9, 9:16, 1:1Video aspect ratio

resolution

stringrequireddefault: 720penum: 720p, 1080pVideo resolution

generate_audio

booleanrequireddefault: trueWhether to generate audio with the video

video

stringformat: uriURL to the generated video

API Schemas

Input
Output

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "prompt": {
      "description": "Text prompt describing the video to generate",
      "type": "string"
    },
    "image_input": {
      "description": "Base64-encoded reference image for i2v",
      "type": "string"
    },
    "duration": {
      "description": "Video duration",
      "default": "6s",
      "type": "string",
      "enum": [
        "4s",
        "6s",
        "8s"
      ]
    },
    "aspect_ratio": {
      "description": "Video aspect ratio",
      "default": "16:9",
      "type": "string",
      "enum": [
        "16:9",
        "9:16",
        "1:1"
      ]
    },
    "resolution": {
      "description": "Video resolution",
      "default": "720p",
      "type": "string",
      "enum": [
        "720p",
        "1080p"
      ]
    },
    "generate_audio": {
      "description": "Whether to generate audio with the video",
      "default": true,
      "type": "boolean"
    }
  },
  "required": [
    "prompt",
    "duration",
    "aspect_ratio",
    "resolution",
    "generate_audio"
  ],
  "additionalProperties": false
}

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "video": {
      "description": "URL to the generated video",
      "type": "string",
      "format": "uri"
    }
  },
  "required": [
    "video"
  ],
  "additionalProperties": false
}