← All playgrounds
Video generation playground

Kling O3 Pro API

The higher-fidelity O3 tier, with the same modes.

Kling O3 Pro is a video generation model from Kuaishou, available on OttoPort's OpenAI-compatible API as the model ID kling-o3-pro at $0.14 / second as of 2026-10-14.

Provider

Kuaishou

Price

$0.14 / second

Model ID

kling-o3-pro

Type

video generation model

Creative conceptsCampaign assetsDeveloper workflows

Create with Kling O3 Pro

video
ExampleSelect to edit
Duration

Your result appears here

Start with the example prompt or make it your own. Your OttoPort account is used securely for generation.

Pricing

Kling O3 Pro API pricing

What OttoPort bills for Kling O3 Pro, and what that works out to per unit. Rates are read from the same catalog the gateway meters against, and were current on 2026-10-14.

Per second$0.14
5-second clip$0.70
8-second clip$1.12
Seconds per $1071of generated video

No subscription and no minimum — OttoPort bills prepaid credits against usage. See the full rate card.

Quickstart

Call Kling O3 Pro in three lines

Send "model": "kling-o3-pro" to POST https://ottoport.ai/api/v1/videos/generations with an OttoPort key. No Kuaishou account, no waitlist, no separate SDK.

curl https://ottoport.ai/api/v1/videos/generations \
  -H "Authorization: Bearer $OTTOPORT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kling-o3-pro",
    "prompt": "cinematic product reveal, slow dolly, black background",
    "duration": 5,
    "aspect_ratio": "16:9"
  }'

Before you start

  1. 1. Create a key at /api-keys.
  2. 2. Top up credits — the smallest pack is $25.
  3. 3. Paste the request. It returns a job ID; poll it or pass a webhook_url.

Full reference at /docs, or drive it from an agent with the MCP server and CLI.

Reference

Request parameters

The body POST https://ottoport.ai/api/v1/videos/generations accepts for Kling O3 Pro.

FieldTypeRequiredNotes
modelstringYesAlways kling-o3-pro for Kling O3 Pro.
promptstringYesSubject, action, and camera movement.
durationintegerNoSeconds of output. This is the billed unit.
resolutionstringNoOne of: 1080p. Tiers above this model's base rate bill at a multiplier.
aspect_ratiostringNoe.g. 16:9 or 9:16.
image_urlstringNoThe first frame, for image-to-video.
last_frame_urlstringNoThe closing frame. With image_url, this is first-and-last-frame generation.
reference_image_urlsarrayNoSubjects the shot carries through — a character, a product — on models that accept references. Up to 7.
video_urlstringNoAn existing video to edit or extend. An edit runs, and bills, as long as this source.
webhook_urlstringNoCalled when the job settles, so you need not poll.
webhook_secretstringNoSigns the webhook so you can verify it came from OttoPort.
Comparison

Kling O3 Pro direct vs through OttoPort

Kling O3 Pro is the same model either way — what changes is how many accounts, keys, and integrations you carry to reach it.

Kuaishou directVia OttoPort
Accounts and keysA Kuaishou account, plus one more for every other model you addOne OttoPort account and one key for the whole catalog
Request shapeKuaishou's own SDK and response formatOpenAI-compatible — point baseURL at OttoPort and change the model string
Switching modelsA new integration per providerReplace kling-o3-pro with any other model ID in the catalog
BillingA separate invoice and contract per providerPrepaid credits, no subscription, one usage ledger
Provider outagesYour call failsConfigured backup routes are tried in order on provider failure
01

Describe the subject and action.

02

Add a camera movement.

03

Specify your output format.

FAQ

Kling O3 Pro API questions

Cost, keys, and model IDs for Kling O3 Pro on OttoPort.

How much does the Kling O3 Pro API cost?

On OttoPort, Kling O3 Pro costs $0.14 / second as of 2026-10-14. For scale, 5-second clip: $0.70. Billing is prepaid usage with no subscription and no minimum, and the current rate is always published at ottoport.ai/pricing.

How do I get a Kling O3 Pro API key?

You do not need a Kuaishou key. Create an OttoPort account, generate a key at ottoport.ai/api-keys, and send it as "Authorization: Bearer <key>" to POST https://ottoport.ai/api/v1/videos/generations with "model": "kling-o3-pro". The same key reaches every other model in the catalog.

What is the model ID for Kling O3 Pro?

The OttoPort model ID for Kling O3 Pro is kling-o3-pro. Pass it as the model field on POST https://ottoport.ai/api/v1/videos/generations, or list it programmatically from GET https://ottoport.ai/api/v1/models.

Is Kling O3 Pro generation synchronous?

No. POST https://ottoport.ai/api/v1/videos/generations returns a job ID immediately. Poll GET https://ottoport.ai/api/v1/videos/generations/{id} for status, or pass webhook_url and webhook_secret and OttoPort will call you when the job settles. You are billed per second of output, so a failed job costs nothing.

Do I need a Kuaishou account to use Kling O3 Pro?

No. OttoPort connects to Kuaishou on your behalf, so one OttoPort account covers Kling O3 Pro and every other model in the catalog — no per-provider contracts, keys, or invoices.

Alternatives

Other video generation models on the same API

Same endpoint, same key — swapping model is a one-string change from kling-o3-pro.

Browse the full catalog — every model with its provider and per-unit price.