Veo 3.1 Fast

Text-to-Video • Google

google/veo-3.1-fast

• Third-party
• Zero data retention

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

Usage

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

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "google/veo-3.1-fast",
  "input": {
    "prompt": "A butterfly landing on a colorful flower in a garden",
    "aspect_ratio": "16:9",
    "duration": "6s",
    "generate_audio": true,
    "resolution": "720p"
  }
}'

{
  "gatewayMetadata": {
    "keySource": "Unified"
  },
  "result": {
    "video": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/google__veo-3.1-fast/quick-demo.mp4"
  },
  "state": "Completed"
}

Examples

<details>

<summary>Social Content — Quick vertical video for social media</summary>

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

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "google/veo-3.1-fast",
  "input": {
    "prompt": "Aesthetic morning routine: sun rays through curtains, coffee being poured",
    "aspect_ratio": "9:16",
    "duration": "6s",
    "generate_audio": true,
    "resolution": "720p"
  }
}'

{
  "gatewayMetadata": {
    "keySource": "Unified"
  },
  "result": {
    "video": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/google__veo-3.1-fast/social-content.mp4"
  },
  "state": "Completed"
}

</details>

<details>

<summary>Motion Graphics — Quick animated graphics</summary>

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

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "google/veo-3.1-fast",
  "input": {
    "prompt": "Glowing neon lines forming geometric patterns on a dark background",
    "aspect_ratio": "16:9",
    "duration": "4s",
    "generate_audio": false,
    "resolution": "720p"
  }
}'

{
  "gatewayMetadata": {
    "keySource": "Unified"
  },
  "result": {
    "video": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/google__veo-3.1-fast/motion-graphics.mp4"
  },
  "state": "Completed"
}

</details>

<details>

<summary>Ambient Scene — Relaxing background video</summary>

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',
    aspect_ratio: '16:9',
    duration: '8s',
    generate_audio: true,
    resolution: '720p',
  },
)
console.log(response)

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run \
  --header "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "google/veo-3.1-fast",
  "input": {
    "prompt": "Rain falling on a window with a blurred city skyline in the background at night",
    "aspect_ratio": "16:9",
    "duration": "8s",
    "generate_audio": true,
    "resolution": "720p"
  }
}'

{
  "gatewayMetadata": {
    "keySource": "Unified"
  },
  "result": {
    "video": "https://pub-04a6d208d361438ea01b797e6973bd19.r2.dev/catalog/google__veo-3.1-fast/ambient-scene.mp4"
  },
  "state": "Completed"
}

</details>

Parameters

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 (Raw)

Input Open Download

Output Open Download

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