Kling 2.6

Kling 2.6 is a Kuaishou video model. 5 or 10 second clips from a description or a photo (the first frame).

Standard (720p) is the most affordable, without sound. Pro (1080p) has higher quality and lets you turn on sound (effects, music, voices) or set the last frame; sound and the last frame do not work together. You pay per second of the clip.

One model, kling-2.6 · ~3 min. The result follows the input fields (prompt, frames, references, video_mode, duration) — there are no separate «animate / edit» endpoints.

#Features

• generate_audio — audio in the clip

#Price

• Price = per-second price × clip length, rounded up to $0.001. Charged when the task is created and fully refunded if it fails.
• Sound (generate_audio: true) and the last frame need 1080p (pro) and do not work together.

#Parameters (field input)

#Examples

#Prompt only

curl -X POST https://mixmedia.tech/api/v1/jobs/createTask \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"kling-2.6","input":{"prompt":"A drone flies over an autumn forest at sunrise, fog, cinematic","resolution":"720p","aspect_ratio":"16:9","duration":"5"}}'

import os, requests

r = requests.post(
    "https://mixmedia.tech/api/v1/jobs/createTask",
    headers={"Authorization": f"Bearer {os.environ['API_KEY']}"},
    json={
      "model": "kling-2.6",
      "input": {
        "prompt": "A drone flies over an autumn forest at sunrise, fog, cinematic",
        "resolution": "720p",
        "aspect_ratio": "16:9",
        "duration": "5"
      }
    },
)
print(r.json())  # {"code": 200, "data": {"taskId": "..."}}

const r = await fetch("https://mixmedia.tech/api/v1/jobs/createTask", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({
    "model": "kling-2.6",
    "input": {
      "prompt": "A drone flies over an autumn forest at sunrise, fog, cinematic",
      "resolution": "720p",
      "aspect_ratio": "16:9",
      "duration": "5"
    }
  }),
});
console.log(await r.json()); // { code: 200, data: { taskId: "..." } }

#With a first frame

curl -X POST https://mixmedia.tech/api/v1/jobs/createTask \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"kling-2.6","input":{"prompt":"The character slowly turns to the camera, the wind moves the hair","first_frame_url":"https://mixmedia.tech/static/img/previews/gpt-t2i.jpg","resolution":"720p","duration":"5"}}'

import os, requests

r = requests.post(
    "https://mixmedia.tech/api/v1/jobs/createTask",
    headers={"Authorization": f"Bearer {os.environ['API_KEY']}"},
    json={
      "model": "kling-2.6",
      "input": {
        "prompt": "The character slowly turns to the camera, the wind moves the hair",
        "first_frame_url": "https://mixmedia.tech/static/img/previews/gpt-t2i.jpg",
        "resolution": "720p",
        "duration": "5"
      }
    },
)
print(r.json())  # {"code": 200, "data": {"taskId": "..."}}

const r = await fetch("https://mixmedia.tech/api/v1/jobs/createTask", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({
    "model": "kling-2.6",
    "input": {
      "prompt": "The character slowly turns to the camera, the wind moves the hair",
      "first_frame_url": "https://mixmedia.tech/static/img/previews/gpt-t2i.jpg",
      "resolution": "720p",
      "duration": "5"
    }
  }),
});
console.log(await r.json()); // { code: 200, data: { taskId: "..." } }

#Create and result

1. POST /api/v1/jobs/createTask with model and input.
2. Poll GET /api/v1/jobs/recordInfo?taskId=… every 3–5 s (or a callback).

#Successful createTask (HTTP 200)

{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_...",
    "task_id": "task_...",
    "status": "submitted"
  }
}

#Completed task (recordInfo)

{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "task_...",
    "task_id": "task_...",
    "state": "success",
    "status": "completed",
    "costUsd": "0.384",
    "refunded": false,
    "resultJson": {
      "videos": [
        {
          "url": "https://…/out.mp4"
        }
      ],
      "duration": 8
    }
  }
}

Aliases: task_id = taskId; status: pending / processing / completed / failed alongside state. Clip URL is in resultJson. size is an alias of aspect_ratio in input.

Photos can be any public https links or uploads via files/upload. Videos and audio — via files/upload only.

#Error handling

API responses are JSON {"code", "msg", "data"}; errors also have a string error field (type). On /api/v1/* the HTTP status matches body code.

#Example response bodies

400

{
  "code": 400,
  "msg": "input.duration: must be between 4 and 30, or \"auto\" / -1",
  "data": null,
  "error": "invalid_request_error"
}

401

{
  "code": 401,
  "msg": "Authentication failed. Please check your API key",
  "data": null,
  "error": "authentication_error"
}

402

{
  "code": 402,
  "msg": "Insufficient balance. Please top up and try again. Available: $0.01, required: $0.015. Top up at https://mixmedia.tech/cabinet/billing",
  "data": {
    "balance": "0.0100",
    "required": "0.0150",
    "currency": "USD",
    "topUpUrl": "https://mixmedia.tech/cabinet/billing"
  },
  "error": "payment_required"
}

429

{
  "code": 429,
  "msg": "Rate limit exceeded: 10 createTask/upload requests per 10 s per key. Retry after 8s",
  "data": null,
  "error": "rate_limit_error"
}

500

{
  "code": 500,
  "msg": "Internal server error",
  "data": null,
  "error": "server_error"
}

#Codes on createTask / upload

Example msg values: Authentication failed. Please check your API key (401); Insufficient balance. Please top up and try again… (402).

#Task errors (recordInfo)

If the task was created and then failed: state: "fail" (alias status: "failed"), failCode / failMsg, and error: { code, message, type }. Money is refunded (refunded: true).

#Rate limits

Over the limit — HTTP 429 and Retry-After.