AI video API · Kling
Kling 2.1 Standard API pricing per second
Generate video with Kling's Kling 2.1 Standard 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$0.0798per secondR$0.27 · 5 credits5 seconds at 720p: $0.40Updated November 10, 2026
Pricing
Kling 2.1 Standard pricing by mode and resolution
| Mode | Resolution | Price per second | In reais | Credits |
|---|---|---|---|---|
| First and last frame | 720p | $0.0798 | R$0.27 | 5 credits |
| From an image | 720p | $0.0798 | R$0.27 | 5 credits |
Updated November 10, 2026. Prices use the cheapest credit pack: 1 credit costs $0.0179 (R$0.0599).
Limits
What Kling 2.1 Standard accepts in each request
- Modes
- First and last frame and From an image
- Duration
- 5 or 10 seconds
- Resolutions
- 720p
- Reference images
- up to 2
Code
How to call Kling 2.1 Standard free quote, generation and result
BODY='{"model":"kling/kling-2.1-standard","prompt":"a dog surfing at sunset","seconds":5,"resolution":"720p"}'
CREDITS=$(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")"const api = "https://api.cut.pro/api/v1";
const headers = { "X-Api-Key": process.env.CUTPRO_API_KEY, "Content-Type": "application/json" };
const body = {
model: "kling/kling-2.1-standard",
prompt: "a dog surfing at sunset",
seconds: 5,
resolution: "720p",
};
const quote = await fetch(`${api}/generations/quote`, { method: "POST", headers, body: JSON.stringify(body) }).then((res) => res.json());
let generation = await fetch(`${api}/generations?wait=60`, {
method: "POST",
headers: { ...headers, "Idempotency-Key": crypto.randomUUID() },
body: JSON.stringify({ ...body, credits: quote.credits }),
}).then((res) => res.json());
while (generation.status === "processing") {
generation = await fetch(`${api}/generations/${generation.id}?wait=60`, { headers }).then((res) => res.json());
}
console.log(generation.output?.url ?? generation.error_code);import os, uuid, requests
API = "https://api.cut.pro/api/v1"
headers = {"X-Api-Key": os.environ["CUTPRO_API_KEY"]}
body = {
"model": "kling/kling-2.1-standard",
"prompt": "a dog surfing at sunset",
"seconds": 5,
"resolution": "720p",
}
quote = requests.post(f"{API}/generations/quote", json=body, headers=headers).json()
generation = requests.post(
f"{API}/generations",
params={"wait": 60},
json={**body, "credits": quote["credits"]},
headers={**headers, "Idempotency-Key": str(uuid.uuid4())},
).json()
while generation["status"] == "processing":
generation = requests.get(f"{API}/generations/{generation['id']}", params={"wait": 60}, headers=headers).json()
print(generation["output"]["url"] if generation["status"] == "ready" else generation["error_code"])Read the docsQuestions
API questions before your first call
- At 720p, each second costs $0.0798 and a minute comes to $4.79 (R$16.02, 268 credits). Each generation runs 5 or 10 seconds.
- Create an account, generate an API key, and request a free quote. The smallest Kling 2.1 Standard generation costs 23 credits, more than the 15 free credits, so you can use them to try a lower-cost model in the catalog.
- First and last frame: two images become the start and the end of the video. From an image: the image you send becomes the first frame.
- No. Buy a credit pack by card, or in reais with Pix from Brazil, and spend it on Kling 2.1 Standard and every other model with the same key.
- No. The Cut.Pro key calls Kling 2.1 Standard 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
Compare
Other models of the same kind
- Kling O3 ProKling · from $0.25 per secondSee price
- Kling 3.0 ProKling · from $0.25 per secondSee price
- Kling O3 StandardKling · from $0.19 per secondSee price
- Kling 3.0 StandardKling · from $0.19 per secondSee price
- Kling 4.0Kling · from $0.38 per secondSee price
- Kling 3.0 Omni 720pKling · from $0.22 per secondSee price
Generate with Kling 2.1 Standard today
Create a key, get a free quote and pay only for what you generate.
Create API key