How does Veo 3.1 API pricing work?

Credits are integer units at $0.001 each. Alt channels bill per generation at the chosen resolution. Official channels bill per second × duration with separate tiers for audio off, audio on, and 4K + audio. See current per-channel rates in the pricing table on this page. Failed jobs refund automatically — you only pay for video that ships.

Which Veo 3.1 channel should I pick?

Lite is the cheapest tier for prompt-only drafts. Fast covers iterative work with image references. Quality is the premium per-generation tier with strict frame-based image-to-video. Use Fast Official or Quality Official when you need audio, 4K, or Vertex-grade controls.

Can the Veo 3.1 API animate a still image?

Yes. On veo3.1-fast and veo3.1-quality, pass image URLs in image_urls (up to 3) and pick generation_type. On the official channels, use first_frame_image and optionally last_frame_image for first / last frame interpolation.

Does Veo 3.1 generate audio?

Native audio is available on the official channels (veo3.1-fast-official and veo3.1-quality-official). Set generate_audio to true and the video ships with a synthesized soundtrack at the audio pricing tier. Alt channels output silent video.

How long can a Veo 3.1 video be?

Alt channels output 8 seconds per call. Official channels accept 4, 6, or 8 seconds. To extend a Fast or Quality clip to 15 seconds, call POST /api/v1/videos/:task_id/remix with the same model and a continuation prompt.

What input formats does Veo 3.1 accept?

Image inputs must be public HTTP(S) URLs (jpg / png / webp) up to 10 MB each. Base64 and data URIs are rejected at the gateway. Up to three reference images on alt channels; first and last frame images on official channels.

How does Veo 3.1 compare to Veo 3?

Veo 3.1 is the latest release in Google's Veo video generator line, building on Veo 3. It improves motion consistency, adds first / last frame interpolation, and ships native audio on official tiers. Pricing on reAPI starts at the Lite channel — see the pricing table on this page for current per-channel rates.

Is Veo 3.1 API free or paid?

Paid. Completed generations are charged at the rates in this page's pricing table. Eligible new accounts may receive promotional test credits; availability and amount are shown at signup or in the dashboard. Technical or provider failures are refunded automatically, except where this page documents a charged output-moderation block.

Does Veo 3.1 API require a monthly subscription?

No. Pricing is pay-as-you-go: $1 buys 1,000 credits and credits never expire. Cost scales with what you generate rather than with a recurring fee.

How do I get a Veo 3.1 API key?

Sign up and create a key in the dashboard, no card required. Pass it as a Bearer token in the Authorization header.

Veo 3.1 API — Google's Veo 3.1 Video Generator

Generate cinematic 8-second clips with Google's Veo 3.1 video generator. Five Veo 3.1 channels — Fast, Quality, Lite, plus official tiers with audio and 4K output.

Highlights: 4 / 6 / 8 s · up to 4K · frame & reference modes
Best for: Product ads, cinematic b-roll
Input: Text, frames or up to 3 references
Output: Video with audio, optional GIF

Input

Prompt*

≤ 4000 chars · English recommended

Aspect ratio

16:9 landscape · 9:16 portrait

Resolution

4K bills at a higher tier

Duration (seconds)

Alt: 8 fixed · Official: 4 / 6 / 8

Reference images

Drag images here or click to upload

0/3 files

Frame mode: first + last · Reference mode: 3 refs

Generation type

Quality channel: frame only

Output GIF

Mutually exclusive with 1080p / 4K

Estimated cost~$0.161161 credits

Result

Try one of these prompts

Pricing

Credit-based — 1 credit = $0.001 USD. Pay only for completed generations.

First test cost

$0.368368 credits

One 5-second sample at the cheapest tier.

Testing budget guide

Add credits

$10

≈ 27 tests

$50

≈ 135 tests

$100

≈ 271 tests

Category	veo3.1-fast Cheap and quick. Per-generation billing at 720p / 1080p or 4K, image-to-video, and remix support.	veo3.1-quality Premium per-generation tier.	veo3.1-lite Cheapest tier. Prompt-only — no image inputs, no fallback toggle.
720p / 1080p	$0.161 Price · 1 generation	$1.150 Price · 1 generation	$0.081 Price · 1 generation
4K	$0.736 Price · 1 generation	$1.725 Price · 1 generation	$0.656 Price · 1 generation

Category	veo3.1-fast-official Vertex-grade Fast. Per-second billing with audio, 4K, and first/last-frame interpolation.	veo3.1-quality-official Vertex-grade Quality. Highest fidelity per-second tier with audio, 4K, and Vertex controls.
Resolution unset (no audio)	$0.092 Price · 1 second	$0.184 Price · 1 second
Resolution unset + audio	$0.111 Price · 1 second	$0.368 Price · 1 second
720P (no audio)	$0.074 Price · 1 second	$0.184 Price · 1 second
720P + audio	$0.092 Price · 1 second	$0.368 Price · 1 second
1080P (no audio)	$0.092 Price · 1 second	$0.184 Price · 1 second
1080P + audio	$0.111 Price · 1 second	$0.368 Price · 1 second
4K (no audio)	$0.230 Price · 1 second	$0.368 Price · 1 second
4K + audio	$0.276 Price · 1 second	$0.552 Price · 1 second

What is the Veo 3.1 API?

Veo 3.1 is Google's video generation model, available on reAPI through five channels that share one async endpoint and one request shape. Fast (up to three reference images), Quality (frame-mode image-to-video) and Lite (prompt-only) bill per generation and return 8-second clips, while the two official tiers bill per second, accept 4, 6 or 8 seconds and add native audio plus 4K output. Every channel renders at 720p, 1080p or 4K, and a separate remix endpoint extends Fast and Quality clips to 15 seconds.

What you can build with this model

Real-world workflows and production use cases you can build and ship with this model.

Cinematic shots from one Veo 3.1 prompt

Send a scene description to the Veo 3.1 API and get an 8-second cinematic clip back. Iterate on framing, lighting, and motion at the speed of typing — no film crew, no edit timeline.

Generate a clip

Bring stills to life with Veo 3.1

Pass a first frame, optional last frame, and a motion prompt. The model interpolates between them or animates from a single anchor — ready for Reels, Shorts, and TikTok in one call.

Native audio on official Veo 3.1 tiers

Switch to an official channel and toggle generate_audio to ship video with synthesized sound in a single call. Skip the post-production sound edit for hero spots and product clips.

Why reAPI for VEO 3.1

Five Veo 3.1 channels, one API

Pick veo3.1-fast for drafts, veo3.1-quality for hero shots, veo3.1-lite for the cheapest tier, or the official channels for audio and 4K. Same endpoint — just change the model field.

Transparent credit pricing

1 credit equals $0.001. Alt channels bill per generation; official channels bill per second × duration. Failed jobs refund automatically — you only pay for video that ships.

Async with Veo 3.1 remix

Submit returns a task ID instantly. Once a Fast or Quality clip lands, call /api/v1/videos/:id/remix to extend it from 8 to 15 seconds without re-prompting.

Integrate the Veo 3.1 API in three steps

step 01
Create an API key
Sign up and grab a key from the dashboard. Free credits cover your first Veo 3.1 generations — no card required.
Open
step 02
Submit a Veo 3.1 task
POST your prompt to /api/v1/videos/generations with the model field set to a Veo 3.1 channel. The endpoint returns a task ID immediately.
Open
step 03
Poll the result
GET /api/v1/tasks/:id until status is completed. Download the output video and ship it.
Open

docs/api/veo3-1

API reference

Drop-in code and the full parameter table.

View full reference

curl -X POST https://reapi.ai/api/v1/videos/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "veo3.1-fast",
    "prompt": "A dolphin leaping through cobalt ocean waves",
    "aspect_ratio": "16:9",
    "resolution": "720p"
  }'

Parameter validation failed

Rejected synchronously with the failing field named. Check enum values, ranges, and URL fields — nothing is charged.

Authentication or balance issue

401 means a missing or invalid Bearer key; 402 means the reserve exceeds your balance. Manage keys and credits in the console.

Content or material rejected

Reference material and outputs pass automated moderation. Rejected tasks fail with a clear error and a full refund.

Task failed or timed out

A task that reaches a failed state is never charged — the reserve refunds automatically. Keep the task id and retry when ready.

Frequently asked questions

Common questions about this model.

Veo 3.1 is Google's latest text-to-video and image-to-video model — the next iteration after Veo 3. reAPI exposes five Veo 3.1 channels behind one OpenAI-style endpoint: Fast, Quality, and Lite for per-generation pricing, plus Fast Official and Quality Official for per-second pricing with audio and 4K.