> ## Documentation Index
> Fetch the complete documentation index at: https://docs.jiekou.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Kling v3.0 Pro Text-to-Video

Kling v3.0 Pro text-to-video generates high-quality videos from text prompts, featuring natural motion and smooth scene dynamics. It supports flexible durations from 3 to 15 seconds, synchronized audio and video generation, and multi-shot video generation.

<Tip>
  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](/en/docs/models/reference-get-async-task-result) to retrieve the generated result.
</Tip>

## Request Headers

<ParamField header="Content-Type" type="string" required={true}>
  Enum value: `application/json`
</ParamField>

<ParamField header="Authorization" type="string" required={true}>
  Bearer authentication format: Bearer \{\{API Key}}.
</ParamField>

## Request Body

<ParamField body="sound" type="boolean" default={false}>
  Whether to generate audio while generating the video.
</ParamField>

<ParamField body="prompt" type="string" required={true}>
  The positive prompt text for generating the video. It can describe scene motion, camera movement, actions, voice style, atmosphere, and sound effects. Must not exceed 2500 characters. Mutually exclusive with multi\_prompt.

  Length limit: 0 - 2500
</ParamField>

<ParamField body="duration" type="integer" default={5}>
  The duration of the generated video, in seconds. Supports flexible durations from 3 to 15 seconds.

  Value range: \[3, 15]
</ParamField>

<ParamField body="cfg_scale" type="number" default={0.5}>
  Controls the flexibility of video generation. Higher values make the generated content adhere more closely to the prompt; lower values produce more natural motion.

  Value range: \[0, 1]
</ParamField>

<ParamField body="aspect_ratio" type="string" default="16:9">
  The aspect ratio of the generated video.

  Available values: `16:9`, `9:16`, `1:1`
</ParamField>

<ParamField body="multi_prompt" type="string[]">
  A list of prompts for multi-shot video generation. Splits the video into multiple shots. Mutually exclusive with prompt.
</ParamField>

<ParamField body="negative_prompt" type="string">
  Negative prompt, specifying elements to avoid in the visuals and audio. Must not exceed 2500 characters.

  Length limit: 0 - 2500
</ParamField>

## Response

<ResponseField name="task_id" type="string" required={true}>
  Use the task\_id to request the [Get Task Result API](/en/docs/models/reference-get-async-task-result) to retrieve the generated output.
</ResponseField>