EvoLink.AIEvoLink.AI

Veo 3.1 Fast API

Leverage Google DeepMind’s speed-tuned Veo 3.1 model. Create 1080p videos with dialogue and SFX in seconds. Optimized for developers building social and ad tools.

Get API Key

Configure Request

0 / 1000

Please login to try the Playground

Response

Click "Generate" to see results

Veo 3.1 Fast API — Accelerate production with synced audio

Integrate the fastest generative video model. Produce 4–8s clips with perfectly aligned speech and ambient sound. Supports vertical formats, reference images, and rapid prompt iteration.

example 1

What can you build with Veo 3.1 Fast API?

Instant social media content

Automate the creation of 9:16 Shorts and Reels. The Veo 3.1 Fast API delivers low-latency renders, making it perfect for high-volume content engines.

Start Using API
example 2

Precision control with references

Maintain character and style consistency. Pass reference images or start/end frames via the API to guide the video generation process accurately.

Start Using API
example 3

Synchronized audio soundscapes

Generate video and audio in a single pass. The model creates dialogue, Foley, and soundtracks that match the visual action frame-by-frame.

Start Using API
example 4

Why developers choose Veo 3.1 Fast API

For teams requiring speed without sacrificing coherence, Veo 3.1 Fast offers the best price-performance ratio for commercial video generation.

Optimized for API speed

Significantly faster inference times compared to the standard model, enabling near-interactive workflows for end-users.

Cost-effective scaling

Lower compute costs per second make it feasible to run thousands of iterations for A/B testing ads or personalizing user content.

Production-ready outputs

Delivers 720p for drafts and 1080p for final export, with built-in watermarking to ensure safety and compliance.

How to integrate Veo 3.1 Fast

A simple API workflow to generate video with audio from text or images.

1

Step 1 — Configure parameters

Set your desired duration (4s, 6s, 8s), aspect ratio, and resolution (720p/1080p) in the API request body.

2

Step 2 — Send prompt & references

Submit your text prompt along with optional reference images for style control or specific start/end frames for transitions.

3

Step 3 — Retrieve video + audio

Receive the MP4 output with fully embedded, synchronized audio ready for immediate playback or publishing.

Open API Playground

Key Capabilities

Advanced features available via the Veo 3.1 Fast API endpoint

Native Audio Generation

Creates speech, music, and sound effects that are temporally aligned with video actions.

High-Speed Inference

Engineered for rapid turnaround, allowing for iterative testing and real-time applications.

Visual Control

Use image-to-video or start/end frame inputs to dictate flow and composition.

Flexible Resolutions

Switch between 720p for speed and 1080p for quality without changing the model.

Physics Simulation

Updated world model handles fluid dynamics, lighting, and collisions with high realism.

SynthID Watermarking

Imperceptible watermarking embedded by default for responsible AI content usage.

Veo 3.1 Fast API vs Other Models

Compare speed, fidelity, and feature sets

ModelDurationResolutionPriceStrength
Veo 3.1 Fast4/6/8s720p / 1080p~$0.15/sec (EvoLink)Lowest latency Veo option; Native Audio; Image references; Ideal for API integration.
Veo 3.1 (Standard)4/6/8s720p / 1080pPremium pricingMaximum visual fidelity and complex physics; best for final hero assets.
Sora (Pro)10–15sUp to 1080p~$0.20/10s (Standard)Longer native duration; strong prompt adherence; competitive physics.

Frequently Asked Questions

The Veo 3.1 Fast API provides programmatic access to Google's speed-optimized video generation model. It prioritizes lower latency and cost while maintaining 1080p resolution and native audio capabilities, making it ideal for scalable applications.
Yes. Unlike many older models, Veo 3.1 Fast generates native audio (including dialogue, ambience, and music) that matches the video content in a single generation pass.
Absolutely. The API supports 'Reference Images' to guide the visual style or character consistency. You can also use 'First and Last Frame' inputs to control the exact starting and ending points of the clip.
Veo 3.1 Fast is significantly cheaper per second of generated video compared to the standard Veo 3.1 model. Through EvoLink routing, costs are optimized to start around $0.15 per second depending on volume.
The API outputs MP4 files in 720p or 1080p resolution. You can choose between 16:9 (landscape) or 9:16 (vertical) aspect ratios, with durations of 4, 6, or 8 seconds.
Yes, Veo 3.1 Fast is designed for commercial workflows, including advertising and social media automation. It includes SynthID watermarking to ensure transparency and compliance.