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POST
/
v3
/
async
/
kling-v3.0-std-t2v
Kling v3.0 Standard Text-to-Video
curl --request POST \
  --url https://api.highwayapi.ai/v3/async/kling-v3.0-std-t2v \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "sound": true,
  "prompt": "<string>",
  "duration": 123,
  "cfg_scale": 123,
  "aspect_ratio": "<string>",
  "negative_prompt": "<string>"
}
'
{
  "task_id": "<string>"
}
Kling v3.0 Standard Text-to-Video generates high-quality videos from text prompts, featuring smooth motion effects, cinematic visuals, accurate prompt adherence, and optional native audio co-generation. It supports durations of 3–15 seconds and multiple aspect ratios.
This is an asynchronous API and only returns the async task’s task_id. You should use this task_id to request the Get Task Result API to retrieve the generated result.

​
Request Headers

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Content-Type
string
required
Enum value: application/json
​
Authorization
string
required
Bearer authentication format: Bearer {{API Key}}.

​
Request Body

​
sound
boolean
default:false
Whether to generate audio while generating the video. Supports Chinese and English voice output.
​
prompt
string
required
The positive prompt text for generating the video; must not exceed 2500 characters.Length limit: 0 - 2500
​
duration
integer
default:5
The duration of the generated video, in seconds.Allowed values: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
​
cfg_scale
number
Controls the flexibility of video generation. Set to 0 for maximum creative freedom, 0.5 (default) for a balanced result, and 1 to strictly follow the prompt.Value range: [0, 1]
​
aspect_ratio
string
default:"16:9"
The aspect ratio of the generated video.Allowed values: 16:9, 9:16, 1:1
​
negative_prompt
string
Negative prompt, describing elements to avoid in the generated video; must not exceed 2500 characters.Length limit: 0 - 2500

​
Response Information

​
task_id
string
required
Use task_id to request the Get Task Result API to retrieve the generated output.