veo-3.1-fast-generate-preview AI Video API

Google veo-3.1-fast-generate-preview for video generation; Flatkey routes this model through /v1/videos. $0.08 per second

Image to VideoReference-guided VideoShort-form Video
Provider
Google
Reference price
from $0.100 / second
Flatkey price
from $0.080 / second-20%
Generator setup · Playground (edit before sign-up)

Input

Quick Prompts
Reference image0 / 1
Start generating

Output

Preview

Request summary

Endpoint
POST /v1/videos
Model ID
veo-3.1-fast-generate-preview
Size
1280x720
Duration
8s
Reference media
None

Preview only. Sign in to submit this request to Flatkey.

Request preview
{
  "model": "veo-3.1-fast-generate-preview",
  "prompt": "Creative direction: At an illustrated lantern festival, audience silhouettes watch a woman puppeteer operate a small paper theater. Lanterns glow overhead while loose paper fragments sweep across the stage, and the camera holds the layered crowd and puppet show together.\n\nVisual treatment: Illustrated paper-theater animation with layered silhouettes and warm lantern glow. Keep this medium and palette consistent across all beats.\n\nShot plan: 6-second timing reference. Scale all beat boundaries proportionally to the selected output duration and compose for the selected aspect ratio.\n00:00–00:02: Establish the paper theater, puppeteer and layered audience.\n00:02–00:04: Show the puppet action as paper fragments drift across the small stage.\n00:04–00:06: Hold the crowd and theater under steady lantern light.\n\nContinuity and finish: Preserve the established rendering style, subject identity, costume or product geometry, palette and light direction throughout. Keep moving subjects in focus; ease camera starts and stops, and let the final composition settle. Retain readable silhouettes during effects and preserve contact points during interactions.\nAvoid: identity drift, extra limbs, duplicated props, intersecting geometry, texture flicker, exposure pumping, abrupt camera jumps, unrequested text, logos or watermarks.",
  "duration": 8,
  "size": "1280x720"
}

veo-3.1-fast-generate-preview API performance

veo-3.1-fast-generate-preview API reliability and uptime

Live Flatkey request telemetry for veo-3.1-fast-generate-preview appears here when enough production traffic is available.

Avg. provider uptime
last 30 days
Latency
last 30 days
Requests
225
30-day window
Successful inference trend

veo-3.1-fast-generate-preview API activity

veo-3.1-fast-generate-preview API usage and request activity

Track request volume and successful inference activity for veo-3.1-fast-generate-preview over the latest reporting window.

Requests
225
30-day window
Latency
last 30 days
Uptime
last 30 days
Successful inference trendActivity

veo-3.1-fast-generate-preview pricing

veo-3.1-fast-generate-preview API pricing and billing

Prices below are calculated from Flatkey pricing data for this model and the visible groups currently returned by our pricing API.

Flatkey price

Price / second

Live catalog model
from $0.080 / second
Price / second
from $0.080 / secondfrom $0.100 / second
Try a prompt
Shared balance

Add credits

Add credits

Use the same Flatkey balance and API key across image, video, audio, and text models.

Model catalog
Model Type
Text to Video
API
/v1/videos
Billing basis
second
Duration
–s
Aspect ratio
adaptive

veo-3.1-fast-generate-preview video generation: core capabilities

Google's veo-3.1-fast-generate-preview route supports Not listed in the catalog. The catalog does not list a category for this model.

veo-3.1-fast-generate-preview scene creation

Turn a written brief into short-form scenes through /v1/videos, ready for creative iteration.

veo-3.1-fast-generate-preview reference-led motion

Animate a designed frame, product, character, or storyboard when the route accepts reference media.

veo-3.1-fast-generate-preview camera and action direction

Shape how the camera, subject, pacing, and framing develop into a coherent clip.

veo-3.1-fast-generate-preview production handoff

Move a tested concept from prompt exploration into an authenticated Flatkey video workflow.

Compare

veo-3.1-fast-generate-preview API comparison: capabilities and access

Compare the catalog facts for veo-3.1-fast-generate-preview with the previous-generation baseline before changing your integration.

CapabilityPrevious generationveo-3.1-fast-generate-preview
ProviderNot verified in this catalog snapshotGoogle
ModalitiesNot verified in this catalog snapshotNot listed in the catalog
ContextNot verified in this catalog snapshotContext window not listed in the catalog
EndpointNot verified in this catalog snapshot/v1/videos
BillingNot verified in this catalog snapshot$0.08 per second

Prompt library

veo-3.1-fast-generate-preview video generation prompt examples

Start with a veo-3.1-fast-generate-preview prompt for short-form creator clips, then adjust the request fields shown in the playground.

Micro-drama and comic creators

At an illustrated lantern festival, audience silhouettes watch a woman puppeteer operate a small paper theater. Lanterns glow overhead while loose paper fragments sweep across the stage, and the camera holds the layered crowd and puppet show together.

View full promptCollapse prompt

Creative direction

At an illustrated lantern festival, audience silhouettes watch a woman puppeteer operate a small paper theater. Lanterns glow overhead while loose paper fragments sweep across the stage, and the camera holds the layered crowd and puppet show together.

Visual treatment

Illustrated paper-theater animation with layered silhouettes and warm lantern glow. Keep this medium and palette consistent across all beats.

Shot plan

6-second timing reference. Scale all beat boundaries proportionally to the selected output duration and compose for the selected aspect ratio.

  1. 00:00–00:02

    Establish the paper theater, puppeteer and layered audience.

  2. 00:02–00:04

    Show the puppet action as paper fragments drift across the small stage.

  3. 00:04–00:06

    Hold the crowd and theater under steady lantern light.

Continuity and finish

Preserve the established rendering style, subject identity, costume or product geometry, palette and light direction throughout. Keep moving subjects in focus; ease camera starts and stops, and let the final composition settle. Retain readable silhouettes during effects and preserve contact points during interactions.

  1. Avoid: identity drift, extra limbs, duplicated props, intersecting geometry, texture flicker, exposure pumping, abrupt camera jumps, unrequested text, logos or watermarks.

Make one like this
Advertising and ecommerce teams

A pop-art running shoe assembles from bold colored panels against a graphic background. The completed shoe strikes the ground, throws a bright splash, and shoots forward with a white motion trail into the final side profile.

View full promptCollapse prompt

Creative direction

A pop-art running shoe assembles from bold colored panels against a graphic background. The completed shoe strikes the ground, throws a bright splash, and shoots forward with a white motion trail into the final side profile.

Visual treatment

Pop-art product animation with bold color panels, graphic splashes and white speed trails. Keep this medium and palette consistent across all beats.

Shot plan

6-second timing reference. Scale all beat boundaries proportionally to the selected output duration and compose for the selected aspect ratio.

  1. 00:00–00:02

    Show the colored shoe panels separated against the graphic background.

  2. 00:02–00:04

    Join the panels, then show the shoe contacting the ground in a bright splash.

  3. 00:04–00:06

    Track its short forward burst and hold the finished side profile.

Continuity and finish

Preserve the established rendering style, subject identity, costume or product geometry, palette and light direction throughout. Keep moving subjects in focus; ease camera starts and stops, and let the final composition settle. Retain readable silhouettes during effects and preserve contact points during interactions.

  1. Avoid: identity drift, extra limbs, duplicated props, intersecting geometry, texture flicker, exposure pumping, abrupt camera jumps, unrequested text, logos or watermarks.

Make one like this
Film concept and production teams

An anime woman in an orange suit runs along a wet deserted train platform, then stops beneath a signal lamp and looks down the tracks. Follow the run laterally and settle behind her on the empty rail corridor.

View full promptCollapse prompt

Creative direction

An anime woman in an orange suit runs along a wet deserted train platform, then stops beneath a signal lamp and looks down the tracks. Follow the run laterally and settle behind her on the empty rail corridor.

Visual treatment

Anime platform scene with orange costume, cool wet surfaces and a signal-light accent. Keep this medium and palette consistent across all beats.

Shot plan

10-second timing reference. Scale all beat boundaries proportionally to the selected output duration and compose for the selected aspect ratio.

  1. 00:00–00:03

    Track the orange-suited woman running along the wet platform.

  2. 00:03–00:06

    Slow with her as she stops beneath the signal lamp.

  3. 00:06–00:10

    Settle behind her looking down the empty tracks.

Continuity and finish

Preserve the established rendering style, subject identity, costume or product geometry, palette and light direction throughout. Keep moving subjects in focus; ease camera starts and stops, and let the final composition settle. Retain readable silhouettes during effects and preserve contact points during interactions.

  1. Avoid: identity drift, extra limbs, duplicated props, intersecting geometry, texture flicker, exposure pumping, abrupt camera jumps, unrequested text, logos or watermarks.

Make one like this
Game art and animation teams

A small 2D hero faces a giant stone golem whose chest holds a glowing cyan core. Turquoise energy spreads around the golem as the hero braces in the foreground and the wide camera holds their scale difference.

View full promptCollapse prompt

Creative direction

A small 2D hero faces a giant stone golem whose chest holds a glowing cyan core. Turquoise energy spreads around the golem as the hero braces in the foreground and the wide camera holds their scale difference.

Visual treatment

2D fantasy game animation with textured stone, a small hero silhouette and turquoise energy. Keep this medium and palette consistent across all beats.

Shot plan

6-second timing reference. Scale all beat boundaries proportionally to the selected output duration and compose for the selected aspect ratio.

  1. 00:00–00:02

    Hold the small hero and giant golem together in a wide frame.

  2. 00:02–00:04

    Brighten the cyan core as turquoise energy spreads around the stone body.

  3. 00:04–00:06

    Hold the braced hero in the foreground with the scale difference clear.

Continuity and finish

Preserve the established rendering style, subject identity, costume or product geometry, palette and light direction throughout. Keep moving subjects in focus; ease camera starts and stops, and let the final composition settle. Retain readable silhouettes during effects and preserve contact points during interactions.

  1. Avoid: identity drift, extra limbs, duplicated props, intersecting geometry, texture flicker, exposure pumping, abrupt camera jumps, unrequested text, logos or watermarks.

Make one like this
Creator and explainer channels

In an illustrated science demonstration, a boy pushes a blue ball down a wooden ramp. Direction arrows appear beside the moving ball while the fixed side view keeps the ramp, hands, and final stopping point visible.

View full promptCollapse prompt

Creative direction

In an illustrated science demonstration, a boy pushes a blue ball down a wooden ramp. Direction arrows appear beside the moving ball while the fixed side view keeps the ramp, hands, and final stopping point visible.

Visual treatment

Illustrated science demonstration with clean outlines and clear blue-ball contrast. Keep this medium and palette consistent across all beats.

Shot plan

10-second timing reference. Scale all beat boundaries proportionally to the selected output duration and compose for the selected aspect ratio.

  1. 00:00–00:03

    Show the boy placing a hand behind the blue ball at the top of the ramp.

  2. 00:03–00:06

    Release the ball and follow its downhill path within the fixed side view.

  3. 00:06–00:10

    Show direction arrows beside the ball and retain the visible stopping point.

Continuity and finish

Preserve the established rendering style, subject identity, costume or product geometry, palette and light direction throughout. Keep moving subjects in focus; ease camera starts and stops, and let the final composition settle. Retain readable silhouettes during effects and preserve contact points during interactions.

  1. Avoid: identity drift, extra limbs, duplicated props, intersecting geometry, texture flicker, exposure pumping, abrupt camera jumps, unrequested text, logos or watermarks.

Make one like this
Music producers and visual artists

A retro digital performer in a white jacket raises one hand on a cyan grid stage. An orange waveform grows behind the figure from left to right while the locked frontal camera holds the performer against the expanding graphic.

View full promptCollapse prompt

Creative direction

A retro digital performer in a white jacket raises one hand on a cyan grid stage. An orange waveform grows behind the figure from left to right while the locked frontal camera holds the performer against the expanding graphic.

Visual treatment

Retro graphic music visual with a cyan grid, white costume and orange waveform. Keep this medium and palette consistent across all beats.

Shot plan

10-second timing reference. Scale all beat boundaries proportionally to the selected output duration and compose for the selected aspect ratio.

  1. 00:00–00:03

    Hold the white-jacketed performer against the cyan grid.

  2. 00:03–00:06

    Raise one hand as the orange waveform grows from left to right.

  3. 00:06–00:10

    Settle the hand and hold the completed graphic behind the figure.

Continuity and finish

Preserve the established rendering style, subject identity, costume or product geometry, palette and light direction throughout. Keep moving subjects in focus; ease camera starts and stops, and let the final composition settle. Retain readable silhouettes during effects and preserve contact points during interactions.

  1. Avoid: identity drift, extra limbs, duplicated props, intersecting geometry, texture flicker, exposure pumping, abrupt camera jumps, unrequested text, logos or watermarks.

Make one like this

Why veo-3.1-fast-generate-preview API

Why use veo-3.1-fast-generate-preview through Flatkey?

Use one gateway for veo-3.1-fast-generate-preview, account controls and the rest of your model catalog.

veo-3.1-fast-generate-preview in one API

Keep the veo-3.1-fast-generate-preview model id and endpoint explicit while using the same Flatkey key as other workloads.

Live catalog pricing

See the current veo-3.1-fast-generate-preview billing dimensions before a request is sent, then confirm the final estimate in your account.

A practical model handoff

Test a veo-3.1-fast-generate-preview prompt in the public playground and carry the same settings into an authenticated integration.

Usage and routing controls

Centralize keys, quotas and routing for veo-3.1-fast-generate-preview without changing your application’s provider-facing workflow.

veo-3.1-fast-generate-preview API

veo-3.1-fast-generate-preview API integration guide

Use the model id above with /v1/videos; keep the request fields and billing unit documented for your route.

Send an authenticated request to /v1/videos with model set to veo-3.1-fast-generate-preview.
Use veo-3.1-fast-generate-preview in your SDK configuration so routing and usage reports map to the intended catalog entry.
Review $0.08 per second and account limits before scaling veo-3.1-fast-generate-preview requests.
Start in the playground, then reuse the request shape with a Flatkey API key in your server or agent.
curl https://router.flatkey.ai/v1/videos \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-..." \
  -d '{
  "model": "veo-3.1-fast-generate-preview",
  "prompt": "Create a short product video with veo-3.1-fast-generate-preview: clear subject motion, realistic lighting, stable camera, and production-ready framing.",
  "duration": 8,
  "size": "1280x720"
}'
Docs

FAQ

veo-3.1-fast-generate-preview API
pricing, features, and usage FAQs

Answers about veo-3.1-fast-generate-preview pricing, capabilities, endpoint access and catalog limits.

What is veo-3.1-fast-generate-preview used for?
veo-3.1-fast-generate-preview is listed by Google for video generation; the catalog lists these modalities: Not listed in the catalog.
How is veo-3.1-fast-generate-preview priced?
Use the pricing section above for current Flatkey prices from our pricing API.
Which API endpoint calls veo-3.1-fast-generate-preview?
Flatkey routes this model through /v1/videos. Set the model field to veo-3.1-fast-generate-preview and follow the fields supported by that endpoint.
What context or input limits does veo-3.1-fast-generate-preview have?
veo-3.1-fast-generate-preview is listed with Context window not listed in the catalog. Other limits depend on the route and current account availability, so verify them before production use.