Kling 3.0

Kling 3.0 is a text-to-video generation model with standard and professional quality modes.

Model

Model Name	Modes
`kling-3.0`	std (standard), pro (professional)

Pricing

Per-mode billing:

Mode	Credits	Price
std	100 credits	$0.50
pro	200 credits	$1.00

Create Task

POST https://api.aivideoapi.ai/v1/videos/generations

Request Body

Field	Type	Required	Description
`model`	string	Yes	Must be `kling-3.0`
`input`	object	Yes	Generation parameters, see below
`callback_url`	string	No	URL to receive task completion/failure notifications

Input Object

Field	Type	Required	Description
`prompt`	string	No	Text description for video generation
`mode`	string	No	`std` (default, standard resolution) or `pro` (higher resolution)

Example: Standard Mode

curl -X POST https://api.aivideoapi.ai/v1/videos/generations \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kling-3.0",
    "callback_url": "https://your-server.com/webhook",
    "input": {
      "prompt": "A drone shot flying over mountains at sunset, cinematic lighting",
      "mode": "std"
    }
  }'

Example: Professional Mode

curl -X POST https://api.aivideoapi.ai/v1/videos/generations \
  -H "Authorization: Bearer sk-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kling-3.0",
    "input": {
      "prompt": "Close-up of a butterfly landing on a flower, macro photography style",
      "mode": "pro"
    }
  }'

Response

{
  "code": 200,
  "msg": "success",
  "data": {
    "taskId": "cbf6b69d-4f03-4817-8ed7-94c0292184a8"
  }
}

Query Task

curl https://api.aivideoapi.ai/v1/tasks/{taskId} \
  -H "Authorization: Bearer sk-your-api-key"

Status transitions: pending -> processing -> completed or failed.

Processing

{
  "id": "e717a5ee-2ed4-47f4-8cc3-53394f1abb35",
  "status": "processing",
  "model": "kling-3.0",
  "created_at": 1774706165,
  "progress": null
}

Completed

{
  "id": "7d89c51e-9430-410e-909e-df347131ebaa",
  "status": "completed",
  "model": "kling-3.0",
  "created_at": 1774790227,
  "completed_at": 1774796529,
  "output": {
    "urls": [
      "https://file.aivideoapi.ai/videos/2026/04/04/abc123.mp4"
    ],
    "metadata": {
      "model": "kling-3.0/video"
    }
  }
}

Video URLs are permanent.

Failed

{
  "id": "57c8772c-f834-46f3-9b7d-81f92e104050",
  "status": "failed",
  "model": "kling-3.0",
  "created_at": 1774793758,
  "error": {
    "code": "upstream_error",
    "message": "Video generation failed"
  }
}

When a task fails, pre-charged credits are automatically refunded.

Callback

Pass callback_url when creating the task. The system will automatically send a POST request to your URL when the task completes or fails. The format matches the query task response.

Error Codes

When a request fails, the API returns a JSON error response:

{
  "error": {
    "code": "insufficient_credits",
    "message": "Your credit balance is too low. Please top up.",
    "type": "billing_error"
  }
}

Error Reference

HTTP Status	Code	Type	Description
400	`invalid_request`	invalid_request_error	Missing or invalid parameters
401	`invalid_api_key`	authentication_error	API key is invalid, disabled, or deleted
402	`insufficient_credits`	billing_error	Credit balance too low, please top up
403	`ip_not_allowed`	permission_error	Request IP not in the key's allowlist
404	`model_not_found`	invalid_request_error	Model does not exist or is inactive
404	`task_not_found`	invalid_request_error	Task ID does not exist
429	`rate_limit_exceeded`	rate_limit_error	Too many requests, please slow down
429	`spend_limit_exceeded`	billing_error	Key spend limit reached (hourly/daily/total)
500	`internal_error`	api_error	Unexpected server error
503	`upstream_error`	upstream_error	Upstream AI provider returned an error

Common Scenarios

invalid_request (400)

Returned when required fields are missing or invalid.

{
  "error": {
    "code": "invalid_request",
    "message": "'model' is required.",
    "type": "invalid_request_error"
  }
}

insufficient_credits (402)

Your balance is too low. Check your balance with GET /v1/credits and top up in Dashboard > Billing.

invalid_api_key (401)

Possible causes:

The key does not start with sk-
The key has been disabled or deleted
The user account has been banned

upstream_error (503)

The upstream AI provider returned an error. This may happen when:

The input contains sensitive or prohibited content
The provider is temporarily unavailable
The request parameters are not supported by the provider

Credits are automatically refunded when a task fails due to upstream errors.