Documentation Index
Fetch the complete documentation index at: https://docs.imagine.art/llms.txt
Use this file to discover all available pages before exploring further.
Balanced speed and quality
Veo 3.1 Fast sits in the middle of the Veo 3.1 family — faster than the flagship Veo 3.1 with more capability than Veo 3.1 Lite. Multi-reference image input (up to 3 images) and 4K resolution support are included. Generation times are 60–90 seconds for 720p and 90–120 seconds for 1080p, making it practical for production workflows where quality and speed need to be balanced. The Transformer backbone with spatio-temporal patches is shared across the Veo 3.1 family.Capabilities
Up to 4K resolution
Supports 720p, 1080p, and 4K output — choose the resolution tier that fits your delivery requirements.
3 reference images
Multi-reference input with up to 3 images for subject appearance, visual style, and scene composition anchoring.
4, 6, or 8-second clips
Selectable clip length — choose 4, 6, or 8 seconds depending on content needs and credit budget.
Frame-to-frame generation
Supports image-to-video with natural, physically plausible motion from a reference starting frame.
Faster than flagship Veo 3.1
Shorter generation times than Veo 3.1 — 60–120 seconds at 720p–1080p for production-pace workflows.
Veo 3.1 family comparison
| Model | Audio | Duration | Max res | Speed | Cost |
|---|---|---|---|---|---|
| Veo 3.1 Lite | No | 8s | 1080p | Fast | Lowest |
| Veo 3.1 Fast | Yes | 4/6/8s | 4K | Balanced | Medium |
| Veo 3.1 | Yes | 4/6/8s | 4K | Slower | Highest |
Specifications
| Feature | Details |
|---|---|
| Developer | Google DeepMind |
| Resolution | 720p, 1080p, 4K |
| Duration | 4, 6, or 8 seconds (selectable) |
| Frame rate | 24 FPS |
| Audio | No native audio |
| Reference images | Up to 3 |
| Aspect ratios | 16:9, 9:16 |
| Generation time | ~60–90s (720p), ~90–120s (1080p), ~2–3min (4K) |
| Architecture | Transformer backbone, spatio-temporal patches |
How to use
Write your prompt
Include scene description, subject behavior, camera movement, and audio environment details.
Upload reference images (optional)
Add up to 3 reference images for character appearance or visual style anchoring.
Select resolution
Choose 720p, 1080p, or 4K depending on your output requirements and credit budget.
Prompting tips
- Describe the visual scene in detail — “A waterfall cascades in the background, mist rising into the air” sets a vivid visual scene.
- Use reference images for product or character consistency — Upload a product shot or character photo as a reference to anchor the visual in your generated clip.
- Be specific about camera framing — “Tight close-up,” “wide establishing shot,” or “over-the-shoulder angle” guide Veo 3.1 Fast’s framing decisions.
Example prompts
A barista steams milk in an artisan coffee shop. Close-up on the steam wand, foam forming. Warm, cozy lighting. 8 seconds, 1080p.
A coastal drone shot at sunrise. Wide angle, slow forward movement over calm ocean. Golden light, misty horizon. 8 seconds, 4K.
Compare models
| Model | Audio | Duration | Resolution | Speed | Best for |
|---|---|---|---|---|---|
| Veo 3.1 Fast | Yes | 4/6/8s | Up to 4K | Balanced | Audio-visual production, 4K |
| Veo 3.1 Lite | No | 8s | 1080p | Fastest | Cost-efficient, no audio |
| Veo 3.1 | Yes | 4–8s | Up to 4K | Slowest | Max fidelity, broadcast quality |
| Sora 2 Pro | Yes | 25s | 1080p | Standard | Long-form A/V, physics |