Veo 3.1 — Google's video model, per clip or per second
Veo 3.1 is Google DeepMind's video generation model. On SeedRouter it comes as five model IDs: 8-second clips from $0.084 each, or per-second models with an audio switch and more controls from $0.0736 per second.
- Text to video
- First and last frame
- Reference images
- Optional audio track
- Up to 4k
- Animated GIF output
Try Veo 3.1 before you write any code
Run Veo 3.1 with the exact request your code will send. Every parameter the API takes is here.
veo-3.1-fastfrom $0.168
Pick a model, describe the shot, add images if the model takes them, and submit once. The clip appears when the task finishes.
The shot: subject, place, camera move and light. On a per-second model with audio on, describe the sound too.
Files are uploaded and sent as URLs.
Up to 3 public image URLs, JPEG, PNG or WebP, 10 MB each. veo-3.1-fast and veo-3.1-quality only.
Frames opens on your first image and can end on a second. References keeps up to 3 images in the shot (fast only). Auto picks from the number of images.
720p, 1080p or 4k. The estimate updates with your choice.
16:9 for wide screens, 9:16 for vertical feeds.
Return the clip as an animated GIF instead of MP4. 720p only.
Extra check of the prompt and images before generation. Always on in the Playground; off by default through the API.
Greyed-out options are available through the API only, not in the playground.
Estimated at current rates from the model, resolution, length and audio setting.
Try one of these prompts
Sample clips made with Veo 3.1
Veo 3.1 pricing
Veo 3.1 bills per clip on three models and per second on two. These are the rates that bill your account.
- Veo 3.1 Fast
- $0.168/clip
- Veo 3.1 Fast
- 119clips
All Veo 3.1 prices come from the rates that bill your account. Failed requests are not charged.
| Billing | What is billed | Rate | Charged |
|---|---|---|---|
| Veo 3.1 Fast · 720p | One 8-second clip, priced by resolution: 720p and 1080p cost the same, 4k costs more | $0.168 | Charged per delivered clip |
| Veo 3.1 Fast · 1080p | One 8-second clip, priced by resolution: 720p and 1080p cost the same, 4k costs more | $0.168 | Charged per delivered clip |
| Veo 3.1 Fast · 4k | One 8-second clip, priced by resolution: 720p and 1080p cost the same, 4k costs more | $0.768 | Charged per delivered clip |
| Veo 3.1 Quality · 720p | One 8-second clip, priced by resolution: 720p and 1080p cost the same, 4k costs more | $1.20 | Charged per delivered clip |
| Veo 3.1 Quality · 1080p | One 8-second clip, priced by resolution: 720p and 1080p cost the same, 4k costs more | $1.20 | Charged per delivered clip |
| Veo 3.1 Quality · 4k | One 8-second clip, priced by resolution: 720p and 1080p cost the same, 4k costs more | $1.80 | Charged per delivered clip |
| Veo 3.1 Lite · 720p | One 8-second clip, priced by resolution: 720p and 1080p cost the same, 4k costs more | $0.084 | Charged per delivered clip |
| Veo 3.1 Lite · 1080p | One 8-second clip, priced by resolution: 720p and 1080p cost the same, 4k costs more | $0.084 | Charged per delivered clip |
| Veo 3.1 Fast (per second) · 720p | Requested seconds × the rate for the resolution | $0.0736 / s | Charged for the requested seconds of each delivered clip |
| Veo 3.1 Fast (per second) · 720p · Audio track | generate_audio raises the per-second rate | $0.0920 / s | Per-second models only |
| Veo 3.1 Fast (per second) · 1080p | Requested seconds × the rate for the resolution | $0.0920 / s | Charged for the requested seconds of each delivered clip |
| Veo 3.1 Fast (per second) · 1080p · Audio track | generate_audio raises the per-second rate | $0.1104 / s | Per-second models only |
| Veo 3.1 Fast (per second) · 4k | Requested seconds × the rate for the resolution | $0.2300 / s | Charged for the requested seconds of each delivered clip |
| Veo 3.1 Fast (per second) · 4k · Audio track | generate_audio raises the per-second rate | $0.2760 / s | Per-second models only |
| Veo 3.1 Quality (per second) · 720p | Requested seconds × the rate for the resolution | $0.1840 / s | Charged for the requested seconds of each delivered clip |
| Veo 3.1 Quality (per second) · 720p · Audio track | generate_audio raises the per-second rate | $0.3680 / s | Per-second models only |
| Veo 3.1 Quality (per second) · 1080p | Requested seconds × the rate for the resolution | $0.1840 / s | Charged for the requested seconds of each delivered clip |
| Veo 3.1 Quality (per second) · 1080p · Audio track | generate_audio raises the per-second rate | $0.3680 / s | Per-second models only |
| Veo 3.1 Quality (per second) · 4k | Requested seconds × the rate for the resolution | $0.3680 / s | Charged for the requested seconds of each delivered clip |
| Veo 3.1 Quality (per second) · 4k · Audio track | generate_audio raises the per-second rate | $0.5520 / s | Per-second models only |
| Failed requests | Any task that ends failed | Free | Nothing is charged |
What is Veo 3.1?
Veo 3.1 is Google DeepMind's video generation model. On SeedRouter, Veo 3.1 turns a text prompt, or a few images, into a short clip in 16:9 or 9:16 at 720p, 1080p or 4k.
Veo 3.1 comes as five model IDs. Three are priced per clip and return 8 seconds: fast for iterations, quality for final renders, lite for cheap batches. Two are priced per second and add lengths, an audio switch, a seed and first and last frames.
Each Veo 3.1 request returns a task ID; poll it and download the clip from SeedRouter's own storage.
Two ways to use Veo 3.1
Call the API from your backend, or hand the job to a coding agent.
Call the API
Send the Veo 3.1 request from your server, keep the task ID, and read the finished clip from the task.
- 1Create an API key
- 2POST the request with your prompt
- 3Poll the task until the video is ready
Let an agent do it
Copy a ready prompt into Claude Code, Codex or Cursor. It shows the body and estimated cost, waits for your approval, then polls the task without resubmitting.
- 1Copy the prompt
- 2Paste it into your agent and describe the shot
- 3Approve the body and cost, then get the video
What Veo 3.1 is good at
Veo 3.1 works best on single shots you can describe in a few lines.
Start and end where you choose
Give Veo 3.1 a first frame, and optionally a last, and it animates between them.
Keep a subject recognisable
On veo-3.1-fast, up to 3 reference images keep a product or character consistent.
Wide or vertical
Veo 3.1 renders 16:9 for YouTube and 9:16 for Reels and TikTok, no cropping after.
Up to 4k
Draft in Veo 3.1 at 720p, then render the keeper at 1080p or 4k.
Sound when you want it
Turn on generate_audio on a per-second model and Veo 3.1 adds an audio track.
Finer control
The per-second Veo 3.1 models add a negative prompt, a seed and lengths of 4, 6 or 8 seconds.
What teams use Veo 3.1 for
Product ads
Turn a packshot into a moving Veo 3.1 shot without booking a shoot.
Social clips
Vertical 9:16 Veo 3.1 clips for Reels and TikTok, wide 16:9 for YouTube.
Storyboards
Test camera moves on veo-3.1-fast before a final render.
Scene transitions
Set a first and last frame and Veo 3.1 fills in the motion between two images.
GIF loops
Get a Veo 3.1 clip back as an animated GIF for email, chat and docs.
Batch variations
Run prompt variants on veo-3.1-lite to find the one worth upgrading.
Start with Veo 3.1 in four steps
- 01
Create a key
Sign in, top up any amount, and create an API key. Credits never expire.
- 02
Send one request
POST the Veo 3.1 body to /v1/videos/generations with the model ID and prompt.
- 03
Poll the task
Keep the Veo 3.1 task ID and check it every 10–20 seconds until it is completed.
- 04
Download the video
Save the hosted Veo 3.1 URL from the task to your own storage.
Veo 3.1 models at a glance
Five Veo 3.1 model IDs, two ways to bill.
| Feature | Veo 3.1 |
|---|---|
| Billing | Per clip: fast, quality, lite. Per second: fast-official, quality-official |
| Clip length | Always 8 s per clip; 4, 6 or 8 s on per-second models |
| Resolution | 720p and 1080p on all five; 4k on all but veo-3.1-lite |
| Image input | fast, quality: up to 3 images; lite: text only; per-second: first and last frame |
| Reference images | veo-3.1-fast only, up to 3 |
| Audio track | Per-clip MP4s came with sound in our tests, with no switch; per-second models add a track only with generate_audio |
| GIF output | Per-clip models, requested at 720p |
| Seed and negative prompt | Per-second models |
Some Veo 3.1 models or prices may be unavailable right now.
What to know before you start
Per-clip videos are 8 seconds
Per-clip Veo 3.1 models return 8 seconds. For 4 or 6, use a per-second model.
One clip per request
Each request makes a new clip; extending an existing video is not offered.
Media is sent as URLs
Send Veo 3.1 images as public HTTP(S) links, not base64. The Playground uploads for you.
Tasks cannot be cancelled
Once submitted, a Veo 3.1 task runs to the end. Check parameters first.
Why run Veo 3.1 on SeedRouter
Pay per clip or per second
Pick the Veo 3.1 billing that fits the job. No subscription, no minimum.
Failed requests are free
If a Veo 3.1 task fails, nothing is charged. You pay only for delivered videos.
Credits never expire
Top up once and use the balance whenever you need it.
Hosted results
Finished Veo 3.1 clips come back as URLs on our storage. Keep copies you need long term.
One balance for every model
The same top-up pays for video, image and text models in the catalogue.
Other models on SeedRouter
Same balance, same task-based workflow.
Veo 3.1 guides
Practical guides to choosing, pricing and integrating the model.
Is Veo 3.1 free? Google Flow gives 50 credits a day, the Gemini API has no free tier for Veo 3.1, and the Gemini app is moving to Omni. What each includes.
Veo 3.1 API pricing per second for Standard, Fast and Lite at 720p, 1080p and 4k, what an 8-second clip costs, the price without audio, and subscription vs API.
Compare Veo 3.1 Lite, Fast and Quality on resolution, length, image inputs, audio and speed, and see which SeedRouter model ID fits drafts, batches and finals.
Veo 3.1 FAQ
What is Veo 3.1?+
Veo 3.1 is Google DeepMind's video generation model. On SeedRouter it makes one clip per request, 16:9 or 9:16, at 720p, 1080p or 4k, from a prompt or up to 3 images.
How much does Veo 3.1 cost?+
An 8-second Veo 3.1 clip on the per-clip models starts at $0.084; 720p and 1080p cost the same and 4k costs more. The per-second models start at $0.0736 per second, and audio raises that rate. The table above shows every rate.
Is Veo 3.1 free?+
No. Veo 3.1 is paid per clip or per second, and new accounts get a small credit to try it. No subscription: top up any amount, credits never expire, and failed requests are free.
Does Veo 3.1 generate audio?+
Yes. Per-clip Veo 3.1 MP4s came back with sound in our tests, and there is no switch to turn it off. On the per-second models, veo-3.1-fast-official and veo-3.1-quality-official, sound is off unless you set generate_audio to true, which raises the per-second rate.
What is the difference between Veo 3.1 Fast, Quality and Lite?+
veo-3.1-fast is for quick iterations and takes frame or reference images. veo-3.1-quality is for final renders, frame mode only. veo-3.1-lite costs least per clip and works from text alone.
Can Veo 3.1 turn an image into a video?+
Yes. Send up to 3 image URLs to veo-3.1-fast or veo-3.1-quality: two set the first and last frame, three act as references on fast. The per-second models use first_frame_image and last_frame_image.
How long are Veo 3.1 videos?+
Per-clip Veo 3.1 models always return 8 seconds. The per-second models take a duration of 4, 6 or 8 seconds, with 8 as the default.
Can Veo 3.1 make videos longer than 8 seconds?+
Not in one request. Per-clip Veo 3.1 models always return 8 seconds, and the per-second models take 4, 6 or 8 seconds. Extending an existing clip is not offered on SeedRouter, so for a longer piece, generate several clips and edit them together.
Does Veo 3.1 add a watermark?+
The Veo 3.1 clips from our test runs had no visible watermark or logo on the picture. Google states that videos made by Veo carry SynthID, an invisible watermark.
How do I get a Veo 3.1 API key?+
Create a SeedRouter account, add credit, and create a key in the dashboard. Send it as a Bearer token with each Veo 3.1 request; one key works for every model.
Generate your first Veo 3.1 clip
Try Veo 3.1 in the Playground, then move the same request into your code.