Veo 3.1 is the proven, widely-adopted release of Google’s video model — the version that made AI clips with synchronized audio feel routine. It renders coherent people, readable text, and steady camera language, which is why it remains the default recommendation for client-facing work on Flux 3 AI.
Veo 3.1 Pro targets final-render fidelity while Veo 3.1 Fast returns drafts quickly at a lower credit cost. Both tiers take text or an image as the starting point, honor negative prompts, and support first/last-frame keyframes plus reference images for subject consistency.
Output is 4, 6, or 8 seconds at 720p or 1080p in 16:9 or 9:16. If you are choosing between generations: Veo 4 pushes peak fidelity further, but Veo 3.1 delivers the most predictable quality-per-credit in the family today.
See what's possible on Flux 3 AI
Sample generations from the platform — write your own prompt to see what Veo 3.1 does with it.
Veo 3.1 vs similar AI video models
Specs from the live catalog — every model below is available on the same account.
| Spec | Veo 3.1 | Veo 4 | Veo 3.1 Lite |
|---|---|---|---|
| Max clip length | 8s | 8s | 8s |
| Durations | 4s, 6s, 8s | 4s, 6s, 8s | 4s, 6s, 8s |
| Resolutions | 720p · 1080p | 720p · 1080p | 720p · 1080p |
| Aspect ratios | 2 | 2 | 2 |
| Audio | |||
| Image to video | |||
| Reference images | up to 1 | up to 1 | up to 1 |
| Keyframes | |||
| Negative prompt |
Capabilities reflect what each model supports on Flux 3 AI today.
What makes Veo 3.1 stand out
Audio built in
Dialogue, ambience, and effects are generated with the picture — Veo 3.1 made publish-ready AI clips mainstream.
Subject consistency
Reference images keep a character or product recognizable across generations — essential for series content.
First/last frame keyframes
Pin where a shot starts and ends; Veo 3.1 fills in believable motion between your two frames.
Negative prompts
Exclude what you don’t want — logos, text artifacts, extra limbs — for cleaner takes with fewer retries.
Fast drafting tier
Veo 3.1 Fast is the family’s best iteration loop: quick, inexpensive drafts that upgrade cleanly to Pro renders.
Shot extension
Extend a finished clip to carry a scene past the 8-second single-shot limit.
Popular use cases
Why creators run Veo 3.1 on Flux 3 AI
- Draft on Veo 3.1 Fast, then rerun the identical prompt on Veo 4 without leaving the studio.
- One credit pool covers Veo 3.1 and 40+ other models — you pay only for what you generate.
- Comparing Veo 3.1 against Kling or Hailuo side by side takes minutes, not separate accounts.
Veo 3.1 specs & capabilities
Output
- Clip duration4, 6, 8 seconds
- Resolutions720p · 1080p
- Aspect ratios16:9 · 9:16
- Generation modesText to Video · Image to Video
Controls
- Image to video (start frame)
- Reference images
- First & last frame keyframes
- Audio generation
- Negative prompt
- Video input / editing
- Extend video
Available versions on Flux 3 AI
Every Veo 3.1 endpoint below is selectable in the Create studio.
- Veo 3.1 ProLatest - 4K, audio, best quality
- Veo 3.1 FastFaster generation, 4K support
Veo 3.1 prompt examples
Copy one as a starting point, or send it straight to the Create studio.
“Medium close-up of a news anchor delivering a headline in a modern studio, teleprompter glow on her face, subtle camera push-in, crisp broadcast lighting”
Demonstrates readable faces and lip-synced native speech.
“Rooftop view of a city intersection as day fades to night, headlights streaking into ribbons, office windows lighting up floor by floor, static wide frame”
Tests temporal consistency across a long lighting change.
“A golden retriever leaping through autumn leaves in slow motion, low tracking camera at ground level, backlit afternoon sun, leaves scattering with each bound”
Shows fur detail, slow-motion physics, and ground-level tracking.
Create with Veo 3.1 in three steps
Describe your idea
Write a prompt or upload a starting image — the more specific the scene, motion, and style, the better Veo 3.1 performs.
Pick Veo 3.1 & settings
Choose duration, resolution, and aspect ratio. The studio shows the exact credit cost before you generate.
Generate & download
Veo 3.1 renders in the cloud — track progress in your library, then download watermark-free or share with a link.
Veo 3.1 questions, answered
What is Veo 3.1?
Veo 3.1 is Google DeepMind’s established video-generation model, producing short clips with synchronized audio from text or image prompts. It sits between Veo 3.1 Lite (economy) and Veo 4 (flagship) in the family lineup on Flux 3 AI.
Veo 3.1 vs Veo 4 — which should I use?
Veo 4 reaches higher peak fidelity, but Veo 3.1 offers the family’s most predictable results per credit and identical controls (keyframes, references, negative prompts). Draft on Veo 3.1 Fast; upgrade to Veo 4 Pro when a shot deserves it.
Does Veo 3.1 support image-to-video?
Yes. Upload an image as the first frame, or provide first and last frames as keyframes and Veo 3.1 interpolates the motion between them.
What durations and resolutions are available?
Clips are 4, 6, or 8 seconds at 720p or 1080p, in 16:9 or 9:16. On Veo models, 1080p renders are generated at the 8-second duration.
Does Veo 3.1 generate audio?
Yes — audio is native. Ambience, sound effects, and speech are created together with the video frames, synchronized automatically.
Can I keep the same character across multiple Veo 3.1 clips?
Use a reference image. Veo 3.1 accepts a reference to preserve a subject’s appearance across generations, which is how creators build multi-clip stories with a consistent character.
How many credits does a Veo 3.1 video cost?
Cost depends on tier (Pro vs Fast), resolution, and duration; the exact credit price is shown in the Create studio before you generate. Fast at 720p is the cheapest way to iterate.
Can I use Veo 3.1 videos commercially?
Yes — clips you generate on Flux 3 AI can be used in commercial projects under our terms of service, and downloads are watermark-free.