AI video API · Kling

Kling O3 Pro API pricing per second

Generate video with Kling's Kling O3 Pro through the Cut.Pro API. You see the price before you generate and pay only for what you use.

  • Pay as you go, no subscription
  • 15 free credits on a new account
  • Free quote before every call
From$0.25per secondR$0.83 · 14 credits5 seconds at 1080p: $1.24Updated November 07, 2026

Pricing

Kling O3 Pro pricing by mode and resolution

ModeResolutionWith soundWithout soundIn reaisCredits
Text only1080p$0.31$0.29R$1.0418 credits
From an image1080p$0.31$0.29R$1.0418 credits
First and last frame1080p$0.31$0.29R$1.0418 credits
With references1080p$0.31$0.25R$1.0418 credits
Video edit1080p$0.37R$1.2421 credits

Updated November 07, 2026. Prices use the cheapest credit pack: 1 credit costs $0.0179 (R$0.0599).

Limits

What Kling O3 Pro accepts in each request

Modes
Text only, From an image, First and last frame, With references, and Video edit
Duration
3 to 15 seconds
Resolutions
1080p
Aspect ratios
16:9, 9:16, 1:1
Reference images
up to 7
Sound
With or without sound (audio: false)
Input video
up to 15 seconds

Code

How to call Kling O3 Pro free quote, generation and result

BODY='{"model":"kling/kling-o3-pro","prompt":"a dog surfing at sunset","seconds":5,"resolution":"1080p","aspect_ratio":"9:16"}'

CREDITS=$(curl -s -X POST https://api.cut.pro/api/v1/generations/quote \
  -H "X-Api-Key: $CUTPRO_API_KEY" \
  -H "Content-Type: application/json" \
  -d "$BODY" | jq .credits)

curl -X POST "https://api.cut.pro/api/v1/generations?wait=60" \
  -H "X-Api-Key: $CUTPRO_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d "$(jq -c --argjson credits "$CREDITS" '. + {credits: $credits}' <<< "$BODY")"
Read the docs

Questions

API questions before your first call

At 1080p, each second costs $0.25 and a minute comes to $14.85 (R$49.69, 830 credits). Each generation runs 3 to 15 seconds.
Create an account, make a key and send the request to the quote, which charges nothing. The smallest Kling O3 Pro generation costs 42 credits, more than the 15 free ones: use those to try a cheaper model from the catalog.
Text only: the prompt describes everything. From an image: the image you send becomes the first frame. First and last frame: two images become the start and the end of the video. With references: up to 7 images guide the character, product or style. Video edit: changes a video you send, following the prompt.
No. Buy a credit pack by card, or in reais with Pix from Brazil, and spend it on Kling O3 Pro and every other model with the same key.
No. The Cut.Pro key calls Kling O3 Pro without a Kling account, with one balance for every model in the catalog.
Yes. With a CPF or CNPJ and full address in your billing details, the nota fiscal is issued after each payment is confirmed.

Still missing one? Help center

Generate with Kling O3 Pro today

Create a key, get a free quote and pay only for what you generate.

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