# Veo 3.1 Fast

> Create social ads, hero shots, and dialogue clips with Veo 3.1 Fast on MixVio. Text or image to video, native audio, 4/6/8s clips, 720p–4K from 19 credits.

- [Canonical Veo 3.1 Fast page](https://mixvio.ai/models/veo-3-1-fast)
- [Official model source](https://deepmind.google/models/veo/)

## Route summary

- **Provider:** Google
- **Media:** video
- **Inputs:** Text · Image
- **Output:** 720p–4K video + audio
- **Duration:** 4–8s
- **Native audio:** Yes
- **Credits:** 19–57 credits
- **Availability:** Available

## Capabilities

- **Fast short-form:** Polished clips in 4, 6, or 8 seconds. Ship social ads, hero opens, and concept takes on the Fast tier—tight durations with clear atmosphere and camera language, ready to review before you publish.
- **Native audio:** Motion and sound in one pass. Prompt dialogue, weather, and room tone with the action—public Veo 3.1 Fast routes return synchronized native audio. Review speech clarity and mix before publishing.
- **Image to video:** Animate a still you own. Start from an owned 16:9 or 9:16 reference, then direct subject motion and camera in plain language. Source images are cropped to a supported ratio when needed—review subject framing before you generate.
- **720p–4K delivery:** Hold fine texture for final delivery. Choose 720p, 1080p, or 4K for the same brief. Draft at a lower resolution, then re-run at 4K when edges, materials, and lighting need to hold for publish.

## How to use

1. **Choose text or an owned image:** Write a text brief, or add one owned 16:9 or 9:16 reference for image-to-video. Prefill from an Example or Key Feature if you want—nothing runs until you generate.
2. **Direct the scene and sound:** Spell out subject, action, camera language, dialogue, and ambience in plain language. Set duration (4, 6, or 8 seconds), ratio (16:9 or 9:16), and resolution (720p, 1080p, or 4K).
3. **Generate, review, then download:** Confirm the credit estimate, generate, then check motion and synced audio before downloading or refining the brief for another pass.

## Pricing

Generation cost varies by the selected input and output controls. 19–57 credits.

- [MixVio pricing](https://mixvio.ai/pricing)

## FAQ

### What is Veo 3.1 Fast?

Veo 3.1 Fast is Google’s fast-tier video model for polished short-form clips from text or an owned reference image. On MixVio, the reviewed public routes return one private video with synchronized native audio at selectable 720p, 1080p, or 4K for 4, 6, or 8 seconds.

### What is Veo 3.1 Fast best for?

Use it for social ads, hero opens, dialogue-ready shorts, and concept takes where you want native audio and a tight 4/6/8 second cut. Prefer Seedance 2.0 when you need multimodal reference packs (multiple images, video, and audio together), or Kling 3.0 when you need longer 5/10/15 second clips with optional end-frame control on supported routes.

### What is the difference between Veo 3.1 Fast and Veo 3.1?

Veo 3.1 Fast is the lower-credit iteration route: text to video or first-frame image-to-video, synchronized native audio, 4/6/8 seconds, and selectable 720p–4K from 19 credits. Veo 3.1 is the Quality route with the same durations and resolutions, plus first and last frame on image-to-video, from 96 credits. Neither public route offers three-image reference packs or scene extension. Open Veo 3.1 when you need last-frame control or Quality delivery.

### What inputs does Veo 3.1 Fast support on MixVio?

Use Text to Video for a scene, camera, dialogue, and sound brief, or Image to Video with one owned JPEG or PNG (≤20 MB). 720p or higher in 16:9 or 9:16 is recommended; other ratios may be cropped. MixVio does not hard-reject stills below 720p. Multimodal reference packs (multiple images, video, and audio together) are not offered on the public Veo Fast routes—use Seedance 2.0 when you need that workflow.

### Does Veo 3.1 Fast generate native audio?

Yes. Public Veo 3.1 Fast routes return video with synchronized native audio. Describe dialogue, ambience, sound effects, or music in the brief, then review speech, lip sync, and mix before publishing.

### Which ratios, resolutions, and durations are supported?

Text to Video supports 16:9 and 9:16. Image to Video supports Source, 16:9, and 9:16. Each run produces one 4, 6, or 8 second clip at 720p, 1080p, or 4K. The generator shows the exact compatible choices for the selected route.

### How many credits does Veo 3.1 Fast use?

Veo 3.1 Fast is available on the Free plan when your balance covers the quote. Runs reserve from 19 credits. Typical anchors on the public Fast routes: 19 credits at 720p, 24 credits at 1080p, and 57 credits at 4K, for any 4 / 6 / 8 second clip. The generator shows the exact reservation before submission. Failed runs cost no credits.

### Is Veo 3.1 Fast free?

It is available on the Free plan, but generation is not zero-credit. The exact quote depends on resolution, and failed runs cost no credits. Free delivery limits still apply.

### How does Veo 3.1 Fast compare with Veo 3.1, Seedance 2.0, and Kling 3.0?

Veo 3.1 Fast targets polished hero and social shorts with native audio on a fast tier at 4/6/8 seconds and selectable 720p–4K. Veo 3.1 is the Quality sibling with first and last frame on image-to-video. Seedance 2.0 emphasizes multimodal reference packs (images, video, and audio) with selectable 480p–4K across 4–15 seconds. Kling 3.0 covers 5/10/15 second cinematic shots with an optional end frame. Compare live credits, inputs, duration, and audio in the comparison table before generating.

### Can I use Veo 3.1 Fast videos commercially?

Paid-plan outputs may be used commercially, subject to the Terms of Service and current Google / Veo terms. You must have rights to every prompt, reference, likeness, brand asset, voice, and sound direction. Prompts and references pass MixVio moderation and Provider safety checks; some requests may be rejected. Review identity, logos, dialogue, lip sync, and audio before publishing. MixVio does not guarantee exclusivity or trademark clearance.

### Can I use real faces or celebrity likenesses?

Only use faces, voices, and likenesses you own or are authorized to use. Public figures, deceptive impersonation, deepfake-style face swaps, minors, and other prohibited content can be blocked by MixVio moderation or Provider safety checks. When a request is allowed, still review identity and consent before any commercial or public use.