Kling TTS | Text to Speech

fal-ai/kling-video/v1/tts

Generate speech from text prompts and different voices using the Kling TTS model, which leverages advanced AI techniques to create high-quality text-to-speech.

Inference

Commercial use

Partner

Schema

LLMs

Playground API

About

Kling TTS API. This endpoint generates an audio of speech from text.

1. Calling the API#

Install the client#

The client provides a convenient way to interact with the model API.

npm install --save @fal-ai/client

Migrate to @fal-ai/client

The @fal-ai/serverless-client package has been deprecated in favor of @fal-ai/client. Please check the migration guide for more information.

Setup your API Key#

Set FAL_KEY as an environment variable in your runtime.

export FAL_KEY="YOUR_API_KEY"

Submit a request#

The client API handles the API submit protocol. It will handle the request status updates and return the result when the request is completed.

import { fal } from "@fal-ai/client";

const result = await fal.subscribe("fal-ai/kling-video/v1/tts", {
  input: {
    text: "Hello world! Kling TTS is available on FAL!"
  },
  logs: true,
  onQueueUpdate: (update) => {
    if (update.status === "IN_PROGRESS") {
      update.logs.map((log) => log.message).forEach(console.log);
    }
  },
});
console.log(result.data);
console.log(result.requestId);

2. Authentication#

The API uses an API Key for authentication. It is recommended you set the FAL_KEY environment variable in your runtime when possible.

API Key#

In case your app is running in an environment where you cannot set environment variables, you can set the API Key manually as a client configuration.

import { fal } from "@fal-ai/client";

fal.config({
  credentials: "YOUR_FAL_KEY"
});

Protect your API Key

When running code on the client-side (e.g. in a browser, mobile app or GUI applications), make sure to not expose your FAL_KEY. Instead, use a server-side proxy to make requests to the API. For more information, check out our server-side integration guide.

3. Queue#

Long-running requests

For long-running requests, such as training jobs or models with slower inference times, it is recommended to check the Queue status and rely on Webhooks instead of blocking while waiting for the result.

Submit a request#

The client API provides a convenient way to submit requests to the model.

import { fal } from "@fal-ai/client";

const { request_id } = await fal.queue.submit("fal-ai/kling-video/v1/tts", {
  input: {
    text: "Hello world! Kling TTS is available on FAL!"
  },
  webhookUrl: "https://optional.webhook.url/for/results",
});

Fetch request status#

You can fetch the status of a request to check if it is completed or still in progress.

import { fal } from "@fal-ai/client";

const status = await fal.queue.status("fal-ai/kling-video/v1/tts", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b",
  logs: true,
});

Get the result#

Once the request is completed, you can fetch the result. See the Output Schema for the expected result format.

import { fal } from "@fal-ai/client";

const result = await fal.queue.result("fal-ai/kling-video/v1/tts", {
  requestId: "764cabcf-b745-4b3e-ae38-1200304cf45b"
});
console.log(result.data);
console.log(result.requestId);

4. Files#

Some attributes in the API accept file URLs as input. Whenever that's the case you can pass your own URL or a Base64 data URI.

Data URI (base64)#

You can pass a Base64 data URI as a file input. The API will handle the file decoding for you. Keep in mind that for large files, this alternative although convenient can impact the request performance.

Hosted files (URL)#

You can also pass your own URLs as long as they are publicly accessible. Be aware that some hosts might block cross-site requests, rate-limit, or consider the request as a bot.

Uploading files#

We provide a convenient file storage that allows you to upload files and use them in your requests. You can upload files using the client API and use the returned URL in your requests.

import { fal } from "@fal-ai/client";

const file = new File(["Hello, World!"], "hello.txt", { type: "text/plain" });
const url = await fal.storage.upload(file);

Auto uploads

The client will auto-upload the file for you if you pass a binary object (e.g. File, Data).

Read more about file handling in our file upload guide.

5. Schema#

Input#

text string* required

The text to be converted to speech

voice_id VoiceIdEnum

The voice ID to use for speech synthesis Default value: "genshin_vindi2"

Possible enum values: genshin_vindi2, zhinen_xuesheng, AOT, ai_shatang, genshin_klee2, genshin_kirara, ai_kaiya, oversea_male1, ai_chenjiahao_712, girlfriend_4_speech02, chat1_female_new-3, chat_0407_5-1, cartoon-boy-07, uk_boy1, cartoon-girl-01, PeppaPig_platform, ai_huangzhong_712, ai_huangyaoshi_712, ai_laoguowang_712, chengshu_jiejie, you_pingjing, calm_story1, uk_man2, laopopo_speech02, heainainai_speech02, reader_en_m-v1, commercial_lady_en_f-v1, tiyuxi_xuedi, tiexin_nanyou, girlfriend_1_speech02, girlfriend_2_speech02, zhuxi_speech02, uk_oldman3, dongbeilaotie_speech02, chongqingxiaohuo_speech02, chuanmeizi_speech02, chaoshandashu_speech02, ai_taiwan_man2_speech02, xianzhanggui_speech02, tianjinjiejie_speech02, diyinnansang_DB_CN_M_04-v2, yizhipiannan-v1, guanxiaofang-v2, tianmeixuemei-v1, daopianyansang-v1, mengwa-v1

voice_speed float

Rate of speech Default value: 1

{
  "text": "Hello world! Kling TTS is available on FAL!",
  "voice_id": "genshin_vindi2",
  "voice_speed": 1
}

Output#

audio File* required

The generated audio

{
  "audio": {
    "url": "https://v3.fal.media/files/monkey/O-ekVTtYqeDblD1oSf2uv_output.mp3"
  }
}

Other types#

ImageToVideoV2MasterRequest#

prompt string* required

image_url string* required

URL of the image to be used for the video

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

TextToVideoV21MasterRequest#

prompt string* required

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

aspect_ratio AspectRatioEnum

The aspect ratio of the generated video frame Default value: "16:9"

Possible enum values: 16:9, 9:16, 1:1

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

File#

url string* required

The URL where the file can be downloaded from.

content_type string

The mime type of the file.

file_name string

The name of the file. It will be auto-generated if not provided.

file_size integer

The size of the file in bytes.

file_data string

File data

ImageToVideoRequest#

prompt string* required

image_url string* required

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

TextToVideoV25ProRequest#

prompt string* required

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

aspect_ratio AspectRatioEnum

The aspect ratio of the generated video frame Default value: "16:9"

Possible enum values: 16:9, 9:16, 1:1

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

ImageToVideoV21MasterRequest#

prompt string* required

image_url string* required

URL of the image to be used for the video

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

CameraControl#

movement_type MovementTypeEnum* required

The type of camera movement

Possible enum values: horizontal, vertical, pan, tilt, roll, zoom

movement_value integer* required

The value of the camera movement

ProImageToVideoRequest#

prompt string* required

image_url string* required

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

aspect_ratio AspectRatioEnum

The aspect ratio of the generated video frame Default value: "16:9"

Possible enum values: 16:9, 9:16, 1:1

tail_image_url string

URL of the image to be used for the end of the video

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

V1TextToVideoRequest#

prompt string* required

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

aspect_ratio AspectRatioEnum

The aspect ratio of the generated video frame Default value: "16:9"

Possible enum values: 16:9, 9:16, 1:1

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

camera_control CameraControlEnum

Camera control parameters

Possible enum values: down_back, forward_up, right_turn_forward, left_turn_forward

advanced_camera_control CameraControl

Advanced Camera control parameters

LipsyncA2VRequest#

video_url string* required

The URL of the video to generate the lip sync for. Supports .mp4/.mov, ≤100MB, 2–10s, 720p/1080p only, width/height 720–1920px.

audio_url string* required

The URL of the audio to generate the lip sync for. Minimum duration is 2s and maximum duration is 60s. Maximum file size is 5MB.

ImageToVideoV21StandardRequest#

prompt string* required

image_url string* required

URL of the image to be used for the video

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

ImageToVideoV25StandardRequest#

prompt string* required

image_url string* required

URL of the image to be used for the video

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

ImageToVideoV21ProRequest#

prompt string* required

image_url string* required

URL of the image to be used for the video

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

tail_image_url string

URL of the image to be used for the end of the video

LipsyncT2VRequest#

video_url string* required

The URL of the video to generate the lip sync for. Supports .mp4/.mov, ≤100MB, 2-60s, 720p/1080p only, width/height 720–1920px. If validation fails, an error is returned.

text string* required

Text content for lip-sync video generation. Max 120 characters.

voice_id VoiceIdEnum* required

Voice ID to use for speech synthesis

voice_language VoiceLanguageEnum

The voice language corresponding to the Voice ID Default value: "en"

Possible enum values: zh, en

voice_speed float

Speech rate for Text to Video generation Default value: 1

DynamicMask#

mask_url string* required

URL of the image for Dynamic Brush Application Area (Mask image created by users using the motion brush)

trajectories list<Trajectory>

List of trajectories

ImageToVideoV25ProRequest#

prompt string* required

image_url string* required

URL of the image to be used for the video

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

VideoEffectsRequest#

input_image_urls list<string>

URL of images to be used for hug, kiss or heart_gesture video.

effect_scene EffectSceneEnum* required

The effect scene to use for the video generation

Possible enum values: hug, kiss, heart_gesture, squish, expansion, fuzzyfuzzy, bloombloom, dizzydizzy, jelly_press, jelly_slice, jelly_squish, jelly_jiggle, pixelpixel, yearbook, instant_film, anime_figure, rocketrocket

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

V1ImageToVideoRequest#

prompt string* required

The prompt for the video

image_url string* required

URL of the image to be used for the video

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

tail_image_url string

URL of the image to be used for the end of the video

static_mask_url string

URL of the image for Static Brush Application Area (Mask image created by users using the motion brush)

dynamic_masks list<DynamicMask>

List of dynamic masks

MultiImageToVideoRequest#

prompt string* required

input_image_urls list<string>* required

List of image URLs to use for video generation. Supports up to 4 images.

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

aspect_ratio AspectRatioEnum

The aspect ratio of the generated video frame Default value: "16:9"

Possible enum values: 16:9, 9:16, 1:1

negative_prompt string

Default value: "blur, distort, and low quality"

TextToVideoRequest#

prompt string* required

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

aspect_ratio AspectRatioEnum

The aspect ratio of the generated video frame Default value: "16:9"

Possible enum values: 16:9, 9:16, 1:1

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

TextToVideoV2MasterRequest#

prompt string* required

duration DurationEnum

The duration of the generated video in seconds Default value: "5"

Possible enum values: 5, 10

aspect_ratio AspectRatioEnum

The aspect ratio of the generated video frame Default value: "16:9"

Possible enum values: 16:9, 9:16, 1:1

negative_prompt string

Default value: "blur, distort, and low quality"

cfg_scale float

The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt. Default value: 0.5

Trajectory#

x integer* required

X coordinate of the motion trajectory

y integer* required

Y coordinate of the motion trajectory

Kling TTS Text to Speech

Table of contents

1. Calling the API

2. Authentication

3. Queue

4. Files

5. Schema

About

1. Calling the API#

Install the client#

Migrate to @fal-ai/client

Setup your API Key#

Submit a request#

2. Authentication#

API Key#

Protect your API Key

3. Queue#

Long-running requests

Submit a request#

Fetch request status#

Get the result#

4. Files#

Data URI (base64)#

Hosted files (URL)#

Uploading files#

Auto uploads

5. Schema#

Input#

Output#

Other types#

ImageToVideoV2MasterRequest#

TextToVideoV21MasterRequest#

File#

ImageToVideoRequest#

TextToVideoV25ProRequest#

ImageToVideoV21MasterRequest#

CameraControl#

ProImageToVideoRequest#

V1TextToVideoRequest#

LipsyncA2VRequest#

ImageToVideoV21StandardRequest#

ImageToVideoV25StandardRequest#

ImageToVideoV21ProRequest#

LipsyncT2VRequest#

DynamicMask#

ImageToVideoV25ProRequest#

VideoEffectsRequest#

V1ImageToVideoRequest#

MultiImageToVideoRequest#

TextToVideoRequest#

TextToVideoV2MasterRequest#

Trajectory#

Related Models