MODEL ID klingai:avatar@2.0-standard

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KlingAI Avatar 2.0 Standard

by Kling AI December 4, 2025

KlingAI Avatar 2.0 Standard generates talking avatar videos from a single portrait image and audio, preserving identity and producing natural lip-sync and expressive motion. It supports up to five minutes of video with multilingual control and gesture clarity for human or cartoon characters.

API Options

Platform-level options for task execution and delivery.

taskType string required value: videoInference: Identifier for the type of task being performed

taskUUID string required UUID v4: UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

outputType string default: URL: Video output type.

Allowed values 1 value

outputFormat string default: MP4

Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.

`MP4`: Widely supported video container (H.264), recommended for general use.
`WEBM`: Optimized for web delivery.
`MOV`: QuickTime format, common in professional workflows (Apple ecosystem).

Allowed values 3 values

outputQuality integer min: 20 max: 99 default: 95: Compression quality of the output. Higher values preserve quality but increase file size.

webhookURL string URI

Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.

Learn more 1 resource

Webhooks
PLATFORM

deliveryMethod string default: async

Determines how the API delivers task results.

Allowed values 1 value

: Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse. Required for long-running tasks like video generation.

Learn more 1 resource

Task Polling
PLATFORM

uploadEndpoint string URI

Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.

Common use cases:

Cloud storage: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
CDN integration: Upload to content delivery networks for immediate distribution.

// S3 presigned URL for secure upload
https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600

// Google Cloud Storage presigned URL
https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789

// Custom storage endpoint
https://storage.example.com/uploads/generated-image.jpg

The content data will be sent as the request body to the specified URL when generation is complete.

safety object

Content safety checking configuration for video generation.

Properties 2 properties

safety » checkContent checkContent boolean default: false: Enable or disable content safety checking. When enabled, defaults to fast mode.

safety » mode mode string default: none

Safety checking mode for video generation.

Allowed values 3 values

: Disables checking.
: Checks key frames.
: Checks all frames.

ttl integer min: 60: Time-to-live (TTL) in seconds for generated content. Only applies when outputType is URL.

includeCost boolean default: false: Include task cost in the response.

numberResults integer min: 1 max: 4 default: 1: Number of results to generate. Each result uses a different seed, producing variations of the same parameters.

Inputs

Input resources for the task (images, audio, etc). These must be nested inside the inputs object.

inputs » image image string required: Image input (UUID, URL, Data URI, or Base64).

inputs » audio audio string required: Audio input (UUID or URL).

Generation Parameters

Core parameters for controlling the generated content.

model string required value: klingai:avatar@2.0-standard

Identifier of the model to use for generation.

Learn more 3 resources

positivePrompt string min: 1 max: 2500

Text prompt describing elements to include in the generated output.

Learn more 2 resources

taskType string required value: videoInference: Type of the task.

taskUUID string required UUID v4: UUID of the task.

videoUUID string required UUID v4: UUID of the output video.

videoURL string URI: URL of the output video.

videoBase64Data string: Base64-encoded video data.

videoDataURI string URI: Data URI of the output video.

seed integer: The seed used for generation. If none was provided, shows the randomly generated seed.

NSFWContent boolean: Flag indicating if NSFW content was detected.

cost float: Task cost in USD. Present when includeCost is set to true in the request.

Audio to Video

Retro Arcade Announcer Avatar

Request

{
  "taskType": "videoInference",
  "taskUUID": "b38a0d45-2cb9-45e7-8340-8ab8de6aec1d",
  "model": "klingai:avatar@2.0-standard",
  "positivePrompt": "A highly expressive talking avatar performance of an energetic arcade event host, preserving the exact identity from the source image. Natural mouth movement, accurate lip-sync, subtle head nods, lively eyebrows, friendly eye contact, confident shoulders, polished presenter timing, stable framing, clean facial detail, appealing conversational realism, vibrant electronic-gaming atmosphere.",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/b06de116-9865-4f69-85aa-47389348df02.jpg",
    "audio": "https://assets.runware.ai/assets/inputs/f7e9776d-d6d9-40d3-aa53-120611f4b9c8.mp3"
  }
}

Response

{
  "taskType": "videoInference",
  "taskUUID": "b38a0d45-2cb9-45e7-8340-8ab8de6aec1d",
  "videoUUID": "e808dfdf-068f-443f-ad60-24f81ea318c3",
  "videoURL": "https://vm.runware.ai/video/os/a10d08/ws/5/vi/e808dfdf-068f-443f-ad60-24f81ea318c3.mp4",
  "cost": 0.5397
}

Audio to Video

Retro Futurist Transit Announcer

Request

{
  "taskType": "videoInference",
  "taskUUID": "bb658937-9ac1-4ade-86bb-9c907221b34e",
  "model": "klingai:avatar@2.0-standard",
  "positivePrompt": "A polished talking avatar video of a retro-futurist transit announcer speaking directly to camera, natural lip sync, expressive eyebrows, subtle head nods, composed shoulders, confident welcoming demeanor, clean broadcast presentation, crisp facial detail, steady framing, smooth realistic mouth shapes, professional public-information style",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/582089a2-657c-4c2a-9b25-5f9bd061442f.jpg",
    "audio": "https://assets.runware.ai/assets/inputs/551930ae-e549-4142-a9e8-24884810c18f.mp3"
  }
}

Response

{
  "taskType": "videoInference",
  "taskUUID": "bb658937-9ac1-4ade-86bb-9c907221b34e",
  "videoUUID": "0911f019-124e-45c9-8606-d4347d32a189",
  "videoURL": "https://vm.runware.ai/video/os/a23d05/ws/5/vi/0911f019-124e-45c9-8606-d4347d32a189.mp4",
  "cost": 0.76265
}

Audio to Video

Amber Radio Host Portrait

Request

{
  "taskType": "videoInference",
  "taskUUID": "8f3dfba7-f74b-424b-a784-1a15226defc4",
  "model": "klingai:avatar@2.0-standard",
  "positivePrompt": "Create a natural talking-avatar video from the provided portrait and voice track. Preserve the subject's identity precisely. Use accurate lip-sync, attentive eye contact, gentle head nods, soft shoulder movement, and believable facial expression that matches an inviting storyteller tone. Keep framing as a vertical close portrait with clean professional presentation and warm broadcast ambiance.",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/57f689a1-fa6a-4aca-8e56-3799724a8932.jpg",
    "audio": "https://assets.runware.ai/assets/inputs/64711012-965c-468b-ac8d-03008677482c.mp3"
  }
}

Response

{
  "taskType": "videoInference",
  "taskUUID": "8f3dfba7-f74b-424b-a784-1a15226defc4",
  "videoUUID": "90ee0dcc-6e13-4e8a-8319-d6117d9c740e",
  "videoURL": "https://vm.runware.ai/video/os/a08d21/ws/5/vi/90ee0dcc-6e13-4e8a-8319-d6117d9c740e.mp4",
  "cost": 0.8448
}

Audio to Video

Clockwork Lecturer Portrait Sequence

Request

{
  "taskType": "videoInference",
  "taskUUID": "f100cffa-8e8c-4693-939c-c950764364dc",
  "model": "klingai:avatar@2.0-standard",
  "positivePrompt": "A refined talking avatar video of a whimsical clockwork professor delivering an engaging explanation to camera. Preserve the exact identity from the portrait image, with precise mouth movement matched to the audio, natural blinking, subtle eyebrow raises, small hand-led upper-body emphasis, and confident educational presence. Clean vertical framing for social video, polished cinematic lighting, realistic skin and fabric detail, charming steampunk-inspired styling, steady camera, professional presentation.",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/a4e31180-a3af-4a6d-8b33-97265984a525.jpg",
    "audio": "https://assets.runware.ai/assets/inputs/190994b2-8fae-4c7f-b4e6-02020fbb929c.mp3"
  }
}

Response

{
  "taskType": "videoInference",
  "taskUUID": "f100cffa-8e8c-4693-939c-c950764364dc",
  "videoUUID": "db907e57-6da5-4eba-b81e-e705afe706bc",
  "videoURL": "https://vm.runware.ai/video/os/a08d21/ws/5/vi/db907e57-6da5-4eba-b81e-e705afe706bc.mp4",
  "cost": 0.76265
}