Kling O1 Image to Video API

Empower your application with the world's most realistic AI video generation capabilities. Turn static visuals into dynamic storytelling assets instantly.

Input Images (Required, up to 2)

Upload images to generate video

Prompt

A cinematic transformation video. Start with the model standing in a clean white photography studio, wearing a simple nude-tone fitting outfit. The camera is steady, 9:16 vertical, natural soft light. The model makes very subtle natural movements such as blinking or shifting her weight. Then, the environment begins to slowly transform. Soft pastel mist fades in behind her. Large pink flowers begin to appear and grow around her in a magical, elegant way. The grass and dreamy atmosphere gradually form. The lighting becomes more cinematic and soft. Next, her outfit transforms from the simple fitting outfit into the final fantasy couture outfit shown in the reference: layered pink tulle dress, fluffy textured jacket, mint-green thigh-high stockings, and heels. The transformation must be smooth, elegant, and high-end. As the scene completes, the final environment fully resembles the dreamy floral fantasy world from the reference image. Extremely large pink flowers, lush green textures, soft cloudy sky. The model stands confidently in the completed scene and makes light natural movements, such as a gentle head turn or slight breathing motion. Ultra high-end, fashion commercial style. Final 2 seconds: the completed big scene, subtle motion in flowers like a gentle breeze, and the model holding a graceful pose.

Parameters

aspect_ratio

16:9

duration

image_urls

https://pub-ebac96ac8a0c4c789f53c7470fd2339c.r2.dev/27e0450a-b0c7-4ffd-bb0a-486bbbb130c5.png,https://pub-ebac96ac8a0c4c789f53c7470fd2339c.r2.dev/b8e5d45230fae3fc9b1834d8be083f53.jpg

Estimated Cost (5s)

8 Credits

Sample Result

Prompt

A cinematic transformation video.
Start with the model standing in a clean white photography studio, wearing a simple nude-tone fitting outfit. The camera is steady, 9:16 vertical, natural soft light. The model makes very subtle natural movements such as blinking or shifting her weight.
Then, the environment begins to slowly transform. Soft pastel mist fades in behind her. Large pink flowers begin to appear and grow around her in a magical, elegant way. The grass and dreamy atmosphere gradually form. The lighting becomes more cinematic and soft.
Next, her outfit transforms from the simple fitting outfit into the final fantasy couture outfit shown in the reference: layered pink tulle dress, fluffy textured jacket, mint-green thigh-high stockings, and heels. The transformation must be smooth, elegant, and high-end.
As the scene completes, the final environment fully resembles the dreamy floral fantasy world from the reference image. Extremely large pink flowers, lush green textures, soft cloudy sky. The model stands confidently in the completed scene and makes light natural movements, such as a gentle head turn or slight breathing motion. Ultra high-end, fashion commercial style.
Final 2 seconds: the completed big scene, subtle motion in flowers like a gentle breeze, and the model holding a graceful pose.

1,324 (suggested: 2,000)

Input Images

Upload reference images

Click to upload or drag and drop

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

Aspect Ratio

Duration

0:00 / 0:00

Audio

History

Max 20 items

0 running · 0 completed

Your generation history will appear here

Pricing

Starting from

$0.111

8 Credits

per 1 second

Guaranteed

99.9% Uptime

Kling O1 Image to Video API: Build the Next Generation of Video SaaS

Stop settling for glitchy, low-resolution animations. Integrate the Kling O1 Image to Video API to deliver 1080p, physically accurate, and commercially viable video content directly into your user's workflow.

What is the Kling O1 Image to Video API?

Cinema-Grade Visual Fidelity

The Kling O1 architecture strictly adheres to physical laws, eliminating the 'warping' effects common in early AI models. By maintaining texture realism and correct shadow propagation, it ensures your generated videos look professionally shot rather than artificially generated, directly boosting user trust for e-commerce and digital signage applications.

Explore Quality Specs

Unmatched Character Consistency

Eliminate identity loss with our advanced facial mapping algorithms. Kling O1 ensures characters remain recognizable throughout the video, solving the 'morphing' issue. This stability is critical for social media automation and influencer marketing platforms that require consistent brand storytelling across multiple generated clips.

View Consistency Demo

Scalable Developer Infrastructure

Engineered for high-concurrency demands, our API provides a stable, low-latency endpoint that auto-scales with your traffic. From MVP to viral hit, rely on our comprehensive SDKs and 99.9% uptime SLA to handle thousands of daily generations without the headache of managing your own GPU clusters.

Read Developer Docs

Why Choose Kling O1 for Your Backend?

In the race for AI dominance, speed and quality are your only moats. Kling O1 delivers the perfect balance of viral-ready aesthetics and developer-friendly reliability.

Drive Higher User Retention

Users abandon apps that generate low-quality 'trash' content. Kling O1 Image to Video API delivers 'Wow' moments that keep users subscribed to your service.

Lower Cost Per Generation

Optimize your margins. Our efficient O1 architecture reduces GPU overhead, allowing us to pass significant savings to API consumers compared to Western competitors.

Faster Time-to-Market

Don't waste months training models. Plug into our pre-optimized Kling O1 Image to Video API and launch your feature before the competition wakes up.

How to Integrate in 3 Simple Steps

Start generating videos programmatically in under 15 minutes with our streamlined RESTful endpoints.

Step 1: Define Model & Source

Initialize your request by setting the `model` parameter to `kling-o1-image-to-video`. Then, populate the `image_urls` array with up to 2 publicly accessible URLs (JPEG/PNG, max 10MB). This tells the engine exactly which visual assets to animate.

Step 2: Configure Generation Params

Craft a descriptive text `prompt` (e.g., 'A gentle breeze moves through the scene') to guide the motion. Refine the output format by specifying the `aspect_ratio` (like '16:9' or '9:16') and setting the video `duration` to either 5 or 10 seconds.

Step 3: Handle Async Callback

Include a `callback_url` in your payload. Once the server processes the heavy video rendering, it will automatically POST the result to your webhook. This async workflow ensures your app remains responsive while handling complex AI tasks.

View Code Examples

Powerful Features for Modern Apps

Everything you need to build a world-class AI video platform.

Duration

5s & 10s Extension

Generate clips up to 10 seconds long. The Kling O1 Image to Video API supports extending videos, allowing for longer narrative arcs suitable for YouTube Shorts or Reels.

Control

Camera Control

Give your users directorial power. Support complex camera movements like Zoom, Pan, and Tilt directly through API parameters for dynamic storytelling.

Quality

Negative Prompting

Ensure brand safety and aesthetic quality. Use negative prompts to explicitly exclude blurred backgrounds, distorted text, or unwanted artistic styles.

Format

Variable Aspect Ratios

Native support for 16:9, 9:16, 1:1, and more. Build for any platform—from Instagram feeds to cinematic landscape displays—without cropping loss.

Dynamics

High-Motion Mode

Perfect for action shots. The Kling O1 Image to Video API can crank up the motion magnitude for sports, dance, or high-energy commercial content.

Advanced

End-Frame Control

Guide the video to a specific conclusion. Upload a starting image and an ending image, and let the API smoothly interpolate the transition.

Flagship Comparison: Kling O1 vs. The Giants

See how Kling O1 stacks up against the most advanced models in 2025.

Model	Duration	Resolution	Price	Strength
Kling O1 API	Up to 10s (Extendable)	1080p / 60fps	Developer Best Value	Unmatched physical realism, character consistency, and API-first design.
Sora 2 Pro	Up to 25s	1080p+	High / Closed Ecosystem	Complex multi-character scenes and creative surrealism.
Veo 3.1	8s~12s	4K Native	Enterprise	Native audio generation and pristine visual fidelity.

Frequently Asked Questions

Everything you need to know about the product and billing.

The Kling O1 Image to Video API is a high-performance, RESTful programming interface that allows developers to integrate the latest O1 video generation model from Kling AI into their own applications. It serves as a bridge between your software (like a mobile app, website, or SaaS platform) and Kling's powerful GPU clusters. Specifically, it specializes in taking static images—such as product photos, portraits, or concept art—and transforming them into high-definition (1080p), physically accurate videos. Unlike basic video tools, this API is designed for scale, offering features like advanced camera controls, 10-second duration extensions, and character consistency, making it the backend engine of choice for next-gen content creation platforms.

While OpenAI's Sora 2 Pro dominates headlines with its massive 60-second generation capability and Google's Veo 3.1 leads in cinematic 4K resolution with native audio, the Kling O1 Image to Video API carves out a unique dominance for **commercial application developers**. The core difference lies in **accessibility and physical consistency**. Sora 2 Pro excels in imaginative, surreal sequences, but often comes with high latency and a closed or expensive ecosystem that makes high-volume SaaS integration difficult. Veo 3.1 targets Hollywood-grade production workflows, making it potentially 'overkill'—both in cost and rendering time—for social media automation tools. In contrast, Kling O1 is engineered as a **'Physical World Simulator'**. It prioritizes hyper-realistic physics (gravity, collision, light) and character consistency over pure duration or 4K pixel counts. For a developer building an e-commerce video tool or an influencer avatar app, Kling O1 provides the perfect balance: it generates 1080p, commercially viable video at a fraction of the inference cost of Veo, with better API availability than Sora. It is the pragmatic choice for building scalable, profitable AI products today.

Yes, absolutely. We understand that the primary use case for the Kling O1 Image to Video API is to build commercial applications or marketing workflows. By subscribing to our paid API tiers, you are granted full commercial rights to the assets generated. This means your users own the content they create on your platform, allowing them to use the videos for paid advertising, social media monetization, YouTube channels, and client deliverables without fear of copyright strikes or licensing issues. We recommend reviewing our specific Terms of Service for detailed compliance on sensitive topics.

Speed is a critical factor for user experience. The Kling O1 Image to Video API is optimized for low-latency inference. For a standard 5-second high-quality video generation (1080p), the typical processing time ranges between 2 to 4 minutes, depending on the current server load and the complexity of the prompt. We utilize a dynamic queuing system that prioritizes shorter tasks to ensure your app remains responsive. For enterprise partners, we offer dedicated throughput options that can significantly reduce wait times and guarantee higher concurrency limits for launch events or viral campaigns.

Through EvoLink, we offer a 'start for free' experience to lower the barrier to entry. New developers receive a limited amount of free credits (typically 10 credits) upon registration, which is sufficient to run initial test generations with the Kling O1 Image to Video API. This allows you to validate the video quality and test your integration code without upfront costs. Once your credits are consumed, we operate strictly on a flexible 'Pay-as-you-go' model. There are no hidden monthly subscriptions or lock-in contracts—you simply pay the lowest price for the exact compute you use, ensuring you never overpay for AI resources as you scale.

To get the best results from the Kling O1 Image to Video API, the quality of the input is paramount. The API accepts standard formats including JPG, PNG, and WEBP. We recommend uploading images with a resolution of at least 1024x1024 pixels to ensure the output video retains sharpness. The file size should generally be kept under 10MB to ensure fast upload speeds. The model works best with clear subjects—whether they are humans, products, or landscapes. Extremely blurry, pixelated, or heavily occluded images may result in suboptimal motion generation.

Safety is built into the core of the Kling O1 Image to Video API. We employ an automated, multi-layer moderation system that scans both the input images and the text prompts for NSFW (Not Safe For Work), violent, or illegal content before processing begins. If a request triggers these safety filters, the API will return a specific error code rather than generating the video. This feature is essential for platform builders, as it protects your application from being used to generate harmful content, reducing your liability and ensuring a safe environment for your community.

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 Video

Kling O1 Image to Video (kling-o1-image-to-video) model transforms static images into dynamic videos.

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

Generated video links are valid for 24 hours, please save them promptly.

Important Notes

At least one input image is required for image-to-video generation.
Maximum 2 images per request.

Request Parameters

modelstringRequiredDefault: kling-o1-image-to-video

Video generation model name.

Examplekling-o1-image-to-video

promptstringRequired

Prompt describing what kind of motion and video to generate.

Notes

Limited to 2000 tokens

ExampleA gentle breeze moves through the scene, creating subtle motion and life.

image_urlsarrayRequired

Input image URL list for image-to-video generation.

Notes

At least 1 image required
Max 2 images per request
Max size: 10MB per image
Formats: .jpg, .jpeg, .png, .webp
URLs must be directly viewable by the server

Example["http://example.com/image1.jpg", "http://example.com/image2.jpg"]

aspect_ratiostringOptionalDefault: 16:9

Video aspect ratio.

Value	Description
16:9	Landscape video
9:16	Portrait video
1:1	Square video

Example'16:9'

durationintegerOptionalDefault: 5

Specifies the generated video duration in seconds.

Value	Description
5	5 seconds duration (Base price)
10	10 seconds duration (2x price)

Notes

Billing is based on duration: 8.064 credits per second

Example5

callback_urlstringOptional

HTTPS callback address after task completion.

Notes

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

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

Request Example

{
  "model": "kling-o1-image-to-video",
  "prompt": "A gentle breeze moves through the scene, creating subtle motion and life.",
  "image_urls": [
    "http://example.com/image1.jpg"
  ],
  "aspect_ratio": "16:9",
  "duration": 5,
  "callback_url": "https://your-domain.com/webhooks/callback"
}

Response Example

{
  "created": 1757169743,
  "id": "task-unified-1757169743-7cvnl5zw",
  "model": "kling-o1-image-to-video",
  "object": "video.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 180,
    "video_duration": 5
  },
  "type": "video",
  "usage": {
    "billing_rule": "per_call",
    "credits_reserved": 40.32,
    "user_group": "default"
  }
}