Text to Video

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

POST /vendors/klingai/v1/kling-v2.6/text-to-video/generation

Text to Video Generation

cURL

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"
}
'

202

{
  "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

Mode	Description
std	Standard Mode - Cost-effective, suitable for quick previews
pro	Professional 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

Show child attributes