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POST
/
vendors
/
klingai
/
v1
/
kling-v2.6
/
text-to-video
/
generation
Text to Video Generation
curl --request POST \
  --url https://api.mulerun.com/vendors/klingai/v1/kling-v2.6/text-to-video/generation \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "prompt": "A beautiful woman is dancing in a room",
  "negative_prompt": "ugly, bad, distorted",
  "mode": "std",
  "aspect_ratio": "16:9",
  "duration": 5,
  "sound": "on"
}
'
{
  "task_info": {
    "id": "8e1e315e-b50d-4334-a231-be7d19a372f4",
    "status": "pending",
    "created_at": "2025-09-21T00:00:00.000Z",
    "updated_at": "2025-09-21T00:00:00.000Z"
  }
}
This API supports Kling v2.6 video generation model with audio generation. Please refer to Kling’s official documentation for more details.

​
Overview

Generate videos from text prompts using the Kling v2.6 model with built-in audio generation support.

​
Key Features

  • Text-to-video generation with audio
  • Multiple aspect ratio options (16:9, 9:16, 1:1)
  • Standard and Professional quality modes
  • 5s or 10s duration
  • Audio generation support (new in v2.6)

​
Quality Modes

ModeDescription
stdStandard Mode - Cost-effective, suitable for quick previews
proProfessional Mode - Higher quality output, longer processing time

​
Audio Generation

The sound parameter enables automatic audio generation:
  • on: Generate video with synchronized audio
  • off: Generate silent video (default)

​
Example Requests

​
Basic Text-to-Video with Audio

{
  "prompt": "A beautiful woman is dancing in a lively room with music",
  "mode": "std",
  "duration": 5,
  "sound": "on"
}

​
Professional Quality Video

{
  "prompt": "Cinematic shot of ocean waves crashing against rocks",
  "negative_prompt": "ugly, bad, distorted",
  "mode": "pro",
  "aspect_ratio": "16:9",
  "duration": 10,
  "sound": "on"
}

​
Silent Video

{
  "prompt": "A person walking through a city at night",
  "mode": "std",
  "duration": 5,
  "sound": "off"
}

​
Parameters

​
sound

  • Options: on, off
  • Default: off
  • Note: Only v2.6 and later versions support this parameter

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json
​
prompt
string
required

Positive text prompt. Cannot exceed 2500 characters.

Maximum string length: 2500
​
negative_prompt
string

Negative text prompt. Cannot exceed 2500 characters.

Maximum string length: 2500
​
sound
enum<string>
default:off

Generate audio simultaneously when generating videos.

  • on: Enable audio generation
  • off: Disable audio generation (silent video)
Available options:
on,
off
​
mode
enum<string>
default:std

Video generation mode

std: Standard Mode, which is cost-effective. pro: Professional Mode, generates videos use longer duration but higher quality video output.

Available options:
std,
pro
​
aspect_ratio
enum<string>
default:16:9

The aspect ratio of the generated video frame (width:height)

Available options:
16:9,
9:16,
1:1
​
duration
enum<integer>
default:5

Video Length in seconds

Available options:
5,
10

Response

202 - application/json

Accepted - Task created successfully

​
task_info
object