Kling O3 API

Kling O3 (kling-v3-omni) is Kling's latest video model family for text-to-video, image-to-video, reference-to-video, and video editing. Through EvoLink, teams can test modes online, route requests through one unified API, and ship 3-15 second video workflows with predictable per-second billing.

Model Type:

Kling O3 Text to Video Kling O3 Image to Video Kling O3 Reference to Video Kling O3 Video Edit ✓Custom Element

Price: $0.014(~ 1 credits) per request

Highest stability with guaranteed 99.9% uptime. Recommended for production environments.

Use the same API endpoint for all versions. Only the model parameter differs.

Reference Type*

Choose whether to create element from images or video

Frontal Image *

Frontal view of the subject — must contain a visible human face (1 image)

Click to upload or drag and drop

Supported formats: JPG, JPEG, PNG
Maximum file size: 10MB; Maximum files: 1

Reference Angles *

Other angle reference images — must contain a visible human face (optional, 1-3)

Click to upload or drag and drop

Supported formats: JPG, JPEG, PNG
Maximum file size: 10MB; Maximum files: 3

Element Name*

Name of the subject element (max 20 characters)

Element Description*

Description of the subject element (max 100 characters)

No video URL found in response

Check console for details

History

Max 20 items

0 running · 0 completed

Your generation history will appear here

Billing Rules

•Fixed price: 1 Credit per element creation
•Full refund on failure
•Estimated processing time: ~10 minutes

Pricing

Model	Mode	Type	Price
Kling Custom Element	Element Creation	Element Creation	$0.014/ request(1 Credits)

Kling Custom Element

Element Creation

Type:Element Creation

Price:

$0.014/ request

(1 Credits)

If it's down, we automatically use the next cheapest available—ensuring 99.9% uptime at the best possible price.

Kling O3 (3.0 Omni) API Pricing, Playground, and Integration

Access Kling O3 through EvoLink's unified API gateway. Run text-to-video, image-to-video, reference-to-video, and video editing workflows with one integration, online testing, and 3-15 second output support.

Kling O3 pricing starts at $0.075 per second on EvoLink, compared to $0.084 on the official Kling API. Access all four video modes — text-to-video, image-to-video, reference-to-video, and video editing — with free credits to start.

Hero showcase of Kling O3 video capabilities

Kling O3 overview and what changed from Kling 3.0

Kling O3 (Kling 3.0 Omni) is the most capable video model in the Kling AI family. It extends Kling 3.0 with reference-to-video and video editing — four modes total through a single API.

Choose O3 over standard Kling 3.0 when your workflow needs more than prompt-driven generation. Available on EvoLink at $0.075/s (vs $0.084 official) with free credits and playground access.

Kling O3 API video modes

Kling O3 Text-to-Video API

Generate videos directly from text prompts with Kling O3. Describe scenes, actions, and styles in natural language and let the model produce 3-15 second clips ready for marketing, social media, or creative projects.

Kling O3 Image-to-Video and Reference-to-Video API

Use images or reference videos to guide generation. Kling O3 supports image-to-video and reference-to-video modes, giving teams precise control over visual style, character consistency, and scene composition.

Kling O3 Video Editing API

Edit and transform existing footage with Kling O3's video editing mode. Apply style transfers, adjust scenes, and refine content without starting from scratch — ideal for iterating on commercial content at scale.

Why teams use Kling O3 through EvoLink

Kling O3 combines four production-ready video modes in one model family, while EvoLink gives teams unified access, predictable billing, and a faster integration path.

Four specialized modes

Text, image, reference, and editing modes cover the full video creation workflow.

Latest V3 Omni architecture

Built on Kling's newest generation for improved quality and consistency.

Flexible 3-15s output

Generate videos from 3 to 15 seconds with per-second billing.

How to integrate the Kling O3 API

Test a mode online, send an async request, and move approved outputs into production.

Choose your mode

Select text-to-video, image-to-video, reference-to-video, or video editing based on your workflow needs.

Submit a generation task

Send your request with prompts, images, or references. Track the async task until results are ready.

Review and iterate

Download results, compare variations, and reuse the same structure for fast iteration across campaigns.

View API Docs

Core capabilities of Kling O3

Four production-ready video modes through one unified API

Text

Text-to-video generation

Generate videos purely from text descriptions. Kling O3 interprets natural language prompts to produce dynamic video content without requiring any visual input.

Image

Image-to-video transformation

Transform static images into dynamic videos. Provide reference images and let Kling O3 animate them with natural motion and scene dynamics.

Reference

Reference video guidance

Use existing videos as references to guide new generation. This mode helps maintain visual consistency and style across multiple outputs.

Edit

AI video editing

Edit and transform existing footage with AI-powered tools. Apply style changes, scene adjustments, and creative transformations without manual editing.

Billing

Per-second billing

Pay only for what you generate with per-second billing. Videos range from 3 to 15 seconds, giving teams precise cost control for every project.

V3 Omni architecture

Built on Kling's latest V3 Omni foundation, delivering improved visual quality, better motion coherence, and more accurate prompt following.

Kling O3 API FAQ

Everything you need to know about the product and billing.

The Kling O3 API provides access to Kling's latest V3 Omni video model through EvoLink. It supports four modes: text-to-video, image-to-video, reference-to-video, and video editing. Each mode generates 3-15 second videos with per-second billing. Use your EvoLink dashboard for current pricing and availability.

Kling O3 offers four modes: text-to-video for generating from prompts, image-to-video for animating images, reference-to-video for style-guided generation using reference videos, and video editing for transforming existing footage. Each mode is optimized for different production workflows.

Kling O3 generates videos between 3 and 15 seconds. Billing is per-second within this range. Videos shorter than 3 seconds are billed at the 3-second minimum. This range is suitable for social media clips, ads, and short-form content.

Kling O3 pricing starts from base per-second rates and then applies mode-specific factors. Text-to-video and image-to-video use a 5.4 credits/second base rate: 720p with sound off = 1.0x, 720p with sound on = 1.334x, 1080p with sound off = 1.334x, and 1080p with sound on = 1.667x. Reference-to-video and video editing use an 8.1 credits/second base rate, with 1080p billed at 1.334x the 720p rate and sound forced off. Check your EvoLink dashboard for your group's specific pricing.

Kling O3 is built on the newer V3 Omni architecture and adds text-to-video as a new mode. It also introduces reference-to-video for style-guided generation. The video duration range is 3-15 seconds compared to O1's varying ranges. O3 represents the latest generation with improved quality and consistency.

Start with a clear subject and describe the action, mood, and setting in simple terms. For image-to-video, provide high-quality reference images. For reference-to-video, use videos that match your desired style. Consistency improves when your prompt structure stays stable across runs.

Limits, pricing, and available modes are determined by your provider and region. Use your EvoLink dashboard and API responses as the source of truth. Check the API documentation for the most current constraints and parameters.

All Kling AI Models

EvoLink provides unified API access to the full Kling model family: All models share the same API key. Switch models with one parameter.

Explore Kling family View Kling 3.0 View Kling O1 View Motion Control

API Reference

Select endpoint

Authentication

All APIs require Bearer Token authentication.

Header

Authorization: 
Bearer YOUR_API_KEY

Get API Key

POST

/v1/videos/generations

Create Element

Kling Custom Element (kling-custom-element) creates reusable subjects (elements) from reference images or videos. Created elements can be referenced in Kling O3 series, Kling V3 Image-to-Video, and Kling V3 Motion Control video generation via element_list for consistent character appearance.

Asynchronous processing mode, use the returned task ID to query status.

Upon completion, result_data will contain the element_id for use in video generation.

Important Notes

This model creates reusable elements (subjects), not videos. No prompt/duration/quality/aspect_ratio parameters needed.
The reference image or video must contain a clearly visible human face.
Fixed pricing: 1 Credit per element creation. Full refund on failure.
Estimated processing time: approximately 10 minutes.
After successful creation, use the returned element_id in Kling O3 series, Kling V3 Image-to-Video, and Kling V3 Motion Control video generation via element_list.

Request Parameters

modelstringRequiredDefault: kling-custom-element

Model name for custom element creation.

Examplekling-custom-element

model_params.element_namestringRequired

Name for the element (subject) being created.

Notes

Max 20 characters

ExampleMyCharacter

model_params.element_descriptionstringRequired

Description of the element, used to help the model understand the subject characteristics.

Notes

Max 100 characters

ExampleA young male character with short hair, wearing a white T-shirt

model_params.reference_typestringRequired

Type of reference material used to create the element.

Value	Description
image_refer	Use reference images to create element
video_refer	Use reference video to create element

Exampleimage_refer

model_params.element_image_listobjectOptional

Reference image list for element creation. Required when reference_type is image_refer.

Notes

Conditionally required: must be provided when reference_type = image_refer
frontal_image (string): URL of the frontal reference image (recommended)
refer_images (array): Additional reference images, each with an image_url field
Use clear, well-lit images with the subject clearly visible for best results
The reference images must contain a clearly visible human face

Example{"frontal_image": "https://example.com/front.jpg", "refer_images": [{"image_url": "https://example.com/side.jpg"}]}

model_params.element_video_listobjectOptional

Reference video for element creation. Required when reference_type is video_refer.

Notes

Conditionally required: must be provided when reference_type = video_refer
video_url (string): URL of the reference video
The reference video must contain a clearly visible human face

Example{"video_url": "https://example.com/reference.mp4"}

model_params.element_voice_idstringOptional

Voice ID to assign to the element. The voice will be used when the element speaks in generated videos.

Notes

Optional parameter — only supported when reference_type = video_refer
Not available for image_refer (image-based element creation does not support voice assignment)
See the Voice ID Reference section below for all available voice IDs

Example829824295735410756

callback_urlstringOptional

HTTPS callback address after task completion.

Notes

Triggered on completion, failure, or cancellation
HTTPS only, no internal IPs
Max length: 2048 chars
Timeout: 10s, Max 3 retries

Examplehttps://your-domain.com/webhooks/element-task-completed

Request Example (Image Reference)

{
  "model": "kling-custom-element",
  "model_params": {
    "element_name": "MyCharacter",
    "element_description": "A young male character with short hair, wearing a white T-shirt",
    "reference_type": "image_refer",
    "element_image_list": {
      "frontal_image": "https://example.com/front.jpg",
      "refer_images": [
        {"image_url": "https://example.com/side.jpg"},
        {"image_url": "https://example.com/back.jpg"}
      ]
    }
  }
}

Request Example (Video Reference)

{
  "model": "kling-custom-element",
  "model_params": {
    "element_name": "CharacterA",
    "element_description": "Middle-aged female with long hair, wearing a red dress",
    "reference_type": "video_refer",
    "element_video_list": {
      "video_url": "https://example.com/reference.mp4"
    },
    "element_voice_id": "829826751244537879"
  }
}

Response Example

{
  "created": 1739500000,
  "id": "task-video-xxxxxxxx",
  "model": "kling-custom-element",
  "object": "video.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "estimated_time": 600,
    "can_cancel": true
  },
  "usage": {
    "credits_reserved": 1,
    "billing_rule": "per_call"
  }
}