Kling AI Avatar v2 API
Call Kling AI Avatar v2 with your KeelRouter API key, the same key you use for every other model. From $0.065 per second, paid per call from a prepaid balance. Failed calls are free.
What is new
- One portrait plus your own audio becomes a video of that face speaking or singing it. The video is as long as the audio, up to 300 seconds.
- prompt sets the expression and motion; the audio drives the mouth. Write the mood plainly, for example "calm, slightly sad, no smile".
- duration is the audio length in whole seconds, used only to hold funds; you are charged for what the provider bills.
- Send mp3 or wav, and silence the audio before the first word so the mouth stays shut until then.
Pricing
| Option | Price |
|---|---|
| standard | $0.065 per second |
| pro | $0.13 per second |
The prices above are for a request without reference images, videos or audio. When the provider reports what it charged for the call, you pay that amount times the same markup as the listed price, so reference inputs, longer inputs and extra outputs cost more and unused options cost less. We hold the highest possible amount when the task starts (reference videos at their maximum length) and refund the rest when it finishes.
Interactive request builder & price estimator
Tier: standard ($0.065 per second)$0.065
Call it
Async: POST /v1/video/generations returns a taskId; poll the same path with ?task_id= or pass a callback_url.
curl https://api.keelrouter.com/v1/video/generations \
-H "Authorization: Bearer $KEELROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "kling-ai-avatar-v2",
"prompt": "A paper boat drifting down a rainy street, slow camera follow",
"mode": "standard"
}'Prompt templates
Copy-ready prompts tuned for Kling AI Avatar v2Cinematic tracking shot with natural physics
POST /v1/video/generationsSpecify camera motion, subject action, and lighting clearly for Kling AI Avatar v2.
Low-angle tracking shot following a vintage yellow tram gliding through a rain-slicked cobblestone street at dusk, warm tungsten window reflections on wet stone, steady gimbal motion, 24fps film look
Product macro turntable reveal
POST /v1/video/generationsControlled studio camera move for Kling AI Avatar v2.
Slow 180-degree orbital camera move around a frosted glass perfume bottle on dark wet slate, fine water droplets catching warm rim light, shallow depth of field
Parameters
| Name | Type | Notes |
|---|---|---|
| model | string | Required. kling-ai-avatar-v2 |
| image_url | string | Required. |
| audio_url | string | Required. |
| prompt | string | Default .. |
| mode | string | One of standard, pro. Default standard. |
| duration | integer | Required. Range 1–300. |
| callback_url | string | Optional https URL; we POST the result when the task ends |
FAQ
- How much does the Kling AI Avatar v2 API cost on KeelRouter?
- From $0.065 per second. You pay per call from a prepaid USD balance; failed calls are not charged. The prices above are for a request without reference images, videos or audio. When the provider reports what it charged for the call, you pay that amount times the same markup as the listed price, so reference inputs, longer inputs and extra outputs cost more and unused options cost less. We hold the highest possible amount when the task starts (reference videos at their maximum length) and refund the rest when it finishes.
- How do I call Kling AI Avatar v2?
- POST to /v1/video/generations with model "kling-ai-avatar-v2". You get a taskId back; poll the same endpoint with ?task_id= or pass a callback_url.
- Is this the official Kling AI Avatar v2 API?
- No. KeelRouter is an independent API gateway. Requests run on Kling AI Avatar v2 through our upstream providers, and the video model keeps its own safety filters.
- How long are results kept?
- Result files are kept for 30 days, then deleted. Download what you want to keep.
KeelRouter is an independent service and is not affiliated with Kuaishou. Kling AI Avatar v2 is a trademark of its owner, used here only to name the model a request runs on.