Kling API pricing: every Kling model per second, with code

export REVANA_API_KEY="sr_live_..."

# One Idempotency-Key per job, made once: resend with the same $KEY after a timeout, a 429 or a 5xx
KEY=$(uuidgen)

# 1. Submit the job (returns 202 with the generation id). max_cost_usd is your cap: the most it may cost.
curl https://api.revana.si/v1/generations \
  -H "Authorization: Bearer $REVANA_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $KEY" \
  -d '{
    "model": "kling-4.0",
    "input": {
      "prompt": "A chef flips a pancake in a sunlit kitchen, catches it, and grins at the camera. Sizzling pan, soft jazz on a radio.",
      "resolution": "720p",
      "aspect_ratio": "16:9",
      "duration": 10
    },
    "max_cost_usd": 1.7
  }'

# 2. Poll with the id from step 1 until status is "succeeded" or "failed".
#    A failed job is free; make a new KEY before you submit it again.
curl https://api.revana.si/v1/generations/gen_01JC2V8K5T \
  -H "Authorization: Bearer $REVANA_API_KEY"

import os
import time
import uuid

import requests

API = "https://api.revana.si/v1"
HEADERS = {"Authorization": f"Bearer {os.environ['REVANA_API_KEY']}"}
# One Idempotency-Key per job, made once. Resend after a timeout, a 429 or a 5xx with the
# same KEY: you get the same job back, never a second charge.
KEY = str(uuid.uuid4())

resp = requests.post(f"{API}/generations", headers={**HEADERS, "Idempotency-Key": KEY}, json={
    "model": "kling-4.0",
    "input": {
        "prompt": "A chef flips a pancake in a sunlit kitchen, catches it, and grins at the camera. Sizzling pan, soft jazz on a radio.",
        "resolution": "720p",
        "aspect_ratio": "16:9",
        "duration": 10,
    },
    "max_cost_usd": 1.7,  # your cap: the most this job may cost
})
resp.raise_for_status()
job = resp.json()

while job["status"] in ("queued", "running"):
    time.sleep(3)
    job = requests.get(f"{API}/generations/{job['id']}", headers=HEADERS).json()

if job["status"] == "succeeded":
    print(job["output"]["urls"], job["cost_usd"])
else:
    # A failed job is free. To try again, make a new KEY: this one answers with the failure.
    print("Failed:", job["error"])

// Node 18 or later. Save as generate.mjs and run: node generate.mjs
import { randomUUID } from "node:crypto";

const API = "https://api.revana.si/v1";
const headers = {
  Authorization: `Bearer ${process.env.REVANA_API_KEY}`,
  "Content-Type": "application/json",
};
// One Idempotency-Key per job, made once. Resend after a timeout, a 429 or a 5xx with the
// same key: you get the same job back, never a second charge.
const key = randomUUID();

const res = await fetch(`${API}/generations`, {
  method: "POST",
  headers: { ...headers, "Idempotency-Key": key },
  body: JSON.stringify({
    model: "kling-4.0",
    input: {
      prompt: "A chef flips a pancake in a sunlit kitchen, catches it, and grins at the camera. Sizzling pan, soft jazz on a radio.",
      resolution: "720p",
      aspect_ratio: "16:9",
      duration: 10,
    },
    max_cost_usd: 1.7, // your cap: the most this job may cost
  }),
});
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
let job = await res.json();

while (job.status === "queued" || job.status === "running") {
  await new Promise((r) => setTimeout(r, 3000));
  job = await (await fetch(`${API}/generations/${job.id}`, { headers })).json();
}

if (job.status === "succeeded") console.log(job.output.urls, job.cost_usd);
else console.error("Failed:", job.error); // free; to try again, make a new key

{
  "id": "gen_01JC2V8K5T",
  "model": "kling-4.0",
  "status": "succeeded",
  "output": {
    "urls": [
      "https://cdn.revana.si/g/gen_01JC2V8K5T/video.mp4"
    ]
  },
  "cost_usd": 1.35,
  "attempts": 1,
  "error": null,
  "created_at": "2026-11-12T10:14:02Z",
  "completed_at": "2026-11-12T10:15:08Z"
}

{
  "model": "kling-3.0",
  "input": {
    "prompt": "A red vintage car drives along a coastal road at sunset, waves crashing below, engine humming.",
    "resolution": "1080p",
    "duration": 5,
    "audio": true
  },
  "max_cost_usd": 1.1
}