Veo 3.1
Veo 3.1 API and pricing
Veo 3.1 is Google's video model. On Root you can run it from the API, from the web app, or from Claude and ChatGPT, and pay for each clip from one balance. An eight-second 720p clip with sound costs $3.68.
Updated
First month free on the Beginner plan, with 650 credits to try any model.
AI video made in Root
What Veo 3.1 can do
- Clips up to 8 seconds long in one generation.
- 720p, 1080p, 4K output, always with sound.
- Start from an image, or give it a first and a last frame to move between.
- Up to 3 reference images of a character or product to keep.
- Aspect ratios: 16:9, 9:16.
Veo 3.1 pricing
What one clip costs on Root, with sound. Prices are per clip, in dollars; 100 credits is $1. You only pay for clips that finish.
| Model | 4 s, 720p | 8 s, 720p | 8 s, 1080p | 8 s, 4K |
|---|---|---|---|---|
| Veo 3.1 | $1.84 | $3.68 | $3.68 | $5.52 |
At 1080p and 4K a clip is charged as eight seconds. The API and the app both show the price before a run starts. Use your own Google key in Root and those clips cost nothing here. Compare every model
When to use Veo 3.1
| Model | Best for | Longest clip | Resolution | Sound | References |
|---|---|---|---|---|---|
| Veo 3.1 | Short shots with sound, starting and ending on frames you choose. | 8 s | 720p, 1080p, 4K | Always on | 3 images |
The Veo 3.1 API
Make an API key in Root under Settings, then API. You choose a daily spending limit for each key when you create it. Then send a request:
curl https://root.film/api/v1/generations \
-H "Authorization: Bearer rfk_your_key" \
-H "Content-Type: application/json" \
-d '{"model":"veo-3.1-generate-preview","project_id":"YOUR_PROJECT_ID",
"input":{"prompt":"a lighthouse keeper opens the door to a storm",
"duration_seconds":8,"resolution":"720p"}}'- The finished clip is saved to the project you name, so your team sees it in the app too.
- Send an Idempotency-Key header and a retry never charges twice.
Or ask for it in Claude
Connect Root to Claude or ChatGPT and you can make Veo clips from the chat, and keep every take in your project. How to connect
Veo questions
How much does Veo 3.1 cost?
On Root, an eight-second Veo 3.1 clip at 720p with sound costs $3.68. Four seconds costs $1.84. Eight seconds in 4K costs $5.52. The API and the app show the price before a run starts, and failed runs are not charged.
Is there a Veo 3.1 API?
Yes. Create an API key in Root and send the model id veo-3.1-generate-preview to the generations endpoint with a prompt and a project. The clip is saved to that project, and you get a download link when it's done.
How long can a Veo 3.1 clip be?
Up to 8 seconds in one generation. A longer scene is several clips cut together, which Root's timeline does in the browser.
Does Veo 3.1 make sound?
Yes. Every Veo 3.1 clip comes with sound, and the price includes it.
Can Veo 3.1 start from an image?
Yes. Give it a first frame, or a first and a last frame to move between, or up to 3 reference images of a character or product to keep.
Can I use my own Google key?
Yes. Add your Google key in Root and Veo runs on it, and Root charges nothing for those clips. The same key works for Nano Banana.
Can I use Veo from Claude or ChatGPT?
Yes. Connect Root to Claude or ChatGPT and ask for a Veo clip in the chat. It's priced and saved to your project the same way as a clip made in the app.
Can I try Veo 3.1 for free?
For a month, yes. The first month of Root's Beginner plan is free and comes with 650 credits, enough for three four-second Veo 3.1 clips at 720p with sound. After that the plan is $9 a month, and you can cancel whenever you like.
Try Root free for a month
The first month of the Beginner plan is free and comes with 650 credits to spend on any model. After that it's $9 a month, and you can cancel whenever you like.