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POST
/
vendors
/
kling
/
v1
/
videos
/
text2video
Text to Video
curl --request POST \
  --url https://api.mulerun.com/vendors/kling/v1/videos/text2video \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model_name": "kling-v2-1-master",
  "prompt": "A beautiful woman is dancing in a room",
  "negative_prompt": "ugly, bad, distorted",
  "cfg_scale": 0.5,
  "mode": "std"
}
'
{
  "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"
  }
}
Most of the parameters of this API are compatible with Kling’s format. Please refer to Kling’s official documentation for more details.

Authorizations

​
Authorization
string
header
required

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

Body

application/json

Text to Video create task request body

​
prompt
string
required

Positive text prompt. Cannot exceed 2500 characters.

Maximum string length: 2500
​
model_name
enum<string>
default:kling-v2-1-master

Model Name

Available options:
kling-v2-1-master
​
negative_prompt
string

Negative text prompt. Cannot exceed 2500 characters.

Maximum string length: 2500
​
cfg_scale
number<float>
default:0.5

Flexibility in video generation. Higher value means lower flexibility and stronger relevance to the prompt. Range [0, 1].

Not supported by Kling v2.x models.

Required range: 0 <= x <= 1
​
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<string>
default:5

Video Length in seconds

Available options:
5,
10

Response

202 - application/json

Message object.

​
task_info
object