Kwaivgi Kling V1 Ai Avatar Pro
Playground
Try it on WavespeedAI!Kling AI Avatar Pro converts audio into talking video portraits; pricing is $1 for the first 5s then $0.20/s up to 600s. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.
Features
Kuaivgi Kling v1 AI Avatar Pro — Audio-Driven Talking Portrait
kling-v1-ai-avatar-pro turns a single portrait into a realistic talking-head video driven by your audio. It produces clean lip-sync, natural eye blinks, subtle head motion, and expressive timing suitable for ads, product explainers, education, and virtual hosts.
Highlights
- High-fidelity lip-sync aligned to phonemes and pauses
- Natural micro-expressions, eye blinks, and head motion for lifelike delivery
- Works from one image; preserves identity and lighting
- Optional style guidance via prompt for framing, vibe, and pacing
- Built for production: stable outputs from licensed training data
Parameters
- audio (required): speech or voice track. The model derives duration from the audio.
- image (required): a clear, front-facing portrait (URL or upload).
- prompt (optional): short guidance for style, mood, camera framing, or background.
Recommended inputs
- Photo: frontal face, even lighting, no heavy occlusions; 512 px or larger
- Audio: clean speech, 16–48 kHz, minimal music or reverb
How to Use
- Upload or paste the audio URL.
- Upload or paste the portrait image URL.
- (Optional) Add a short prompt describing style or background tone.
- Press Run and download the generated avatar video.
Tips
- Trim long silences at the head and tail of the audio for snappier timing and lower cost.
- For business use, prepare a neutral background and consistent headroom across images.
- Use high-quality microphones or TTS to avoid muffled consonants.
Pricing
- Price per second: $0.20
Billing rules
- Minimum charge: 5 seconds.
- Exact-length billing: after the 5-second minimum, price = audio duration (in seconds) × $0.20, up to the cap.
- Maximum billable length: 600 seconds (10 minutes) → $120.00 cap.
- Currency rounding: totals are rounded to the nearest cent.
Authentication
For authentication details, please refer to the Authentication Guide.
API Endpoints
Submit Task & Query Result
# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/kwaivgi/kling-v1-ai-avatar-pro" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{}'
# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"
Parameters
Task Submission Parameters
Request Parameters
| Parameter | Type | Required | Default | Range | Description |
|---|---|---|---|---|---|
| audio | string | Yes | - | - | The audio for generating the output. |
| image | string | Yes | - | The image for generating the output. | |
| prompt | string | No | - | The positive prompt for the generation. |
Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data.id | string | Unique identifier for the prediction, Task Id |
| data.model | string | Model ID used for the prediction |
| data.outputs | array | Array of URLs to the generated content (empty when status is not completed) |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.has_nsfw_contents | array | Array of boolean values indicating NSFW detection for each output |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |
Result Request Parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| id | string | Yes | - | Task ID |
Result Response Parameters
| Parameter | Type | Description |
|---|---|---|
| code | integer | HTTP status code (e.g., 200 for success) |
| message | string | Status message (e.g., “success”) |
| data | object | The prediction data object containing all details |
| data.id | string | Unique identifier for the prediction, the ID of the prediction to get |
| data.model | string | Model ID used for the prediction |
| data.outputs | string | Array of URLs to the generated content (empty when status is not completed). |
| data.urls | object | Object containing related API endpoints |
| data.urls.get | string | URL to retrieve the prediction result |
| data.has_nsfw_contents | array | Array of boolean values indicating NSFW detection for each output |
| data.status | string | Status of the task: created, processing, completed, or failed |
| data.created_at | string | ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”) |
| data.error | string | Error message (empty if no error occurred) |
| data.timings | object | Object containing timing details |
| data.timings.inference | integer | Inference time in milliseconds |