veo-3-1-fast-generate-001

Models/Veo 3.1 Fast

Model Code

veo-3.1-fast-generate-001

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Model overview

Video generationFastText to videoImage to video

Veo 3.1 Fast is Google's faster and lower-cost Veo 3.1 variant for scaled creative video production.

Company: GoogleProvider: Google Vertex AI

Model capabilities

Input modalityT

Output modalityT

Model experience✓

Text-to-video✓

Image-to-video✓

Prompt rewriting✓

First / last frame control✓

Reference images✓

C2PA✓

Function calling×

Structured output×

Fine-tuning×

Model pricing

720p video without audio$0.08/s

1080p video without audio$0.10/s

4K video without audio$0.25/s

720p video with audio$0.10/s

1080p video with audio$0.12/s

4K video with audio$0.30/s

Rate limits and context

Regionus-central1

Durations4s / 6s / 8s

Aspect ratios16:9 / 9:16

Output resolutions720p / 1080p / 4K

Output formatMP4

Maximum outputs4 videos per prompt

Default frame rate24 FPS

API reference

EndpointPOST /v1/video/generations

SDKOpenAI-compatible

API code examples

Get API Key

import os
import requests

response = requests.post(
    "https://api.wlrouter.com/v1/video/generations",
    headers={
        "Authorization": f"Bearer {os.environ['WLROUTER_API_KEY']}",
        "Content-Type": "application/json",
    },
    json={
  "model": "veo-3.1-fast-generate-001",
  "prompt": "A calm sunrise over a modern city skyline.",
  "duration": 4,
  "resolution": "720p",
  "parameters": {
    "generateAudio": False
  }
}
)
response.raise_for_status()
print(response.json())