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Kie.ai offers an affordable, stable Kling 2.1 API with 1080p resolution and realistic motion effects, supporting high concurrency for seamless AI video integration.


The Kling 2.1 Standard API delivers cost-effective video generation at 720p resolution. It supports image to video creation with basic motion enhancements, producing smooth, reliable results. At just $0.125 per 5 seconds, it’s perfect for generating engaging visuals without high costs.

Kling 2.1 Standard API

Designed for professional workflows, the Kling 2.1 Pro API offers 1080p resolution with enhanced realism and improved motion fluidity. At $0.25 per 5 seconds, it balances quality and affordability. Expect seamless transitions and detailed scenes, ideal for videos requiring professional-grade results.

Kling 2.1 Pro API

The Kling 2.1 Master API unlocks premium capabilities, delivering hyper-realistic 1080p videos with advanced physics, dynamic camera controls. Priced at $0.80 per 5 seconds, it’s tailored for complex animations. With unmatched fidelity and creative control, this The Kling API excels in demanding projects where lifelike motion and cinematic quality are essential.

Kling 2.1 Master API

Overview of Kling 2.1 API Versions: Standard, Pro, and Master

Kling 2.1 API now supports up to 1080p resolution for Pro and Master versions, a significant leap from Kling 1.6’s 720p limit. Enhanced rendering techniques reduce pixelation, delivering crisp, high-quality videos that meet modern standards for creators and businesses alike.

High-Resolution Video Outputs

The Kling 2.1 API leverages advanced 3D spatiotemporal attention to create lifelike movements, such as fluid character actions or natural object trajectories. This results in seamless, artifact-free videos, perfect for dynamic scenes like sports or action sequences, with 20-30% better realism.

Realistic Motion and Physics

Kling 2.1 API introduces advanced camera control, allowing precise adjustments to angles, zooms, and paths, unlike Kling 1.6’s limited options. It supports complex sequential scenes with smooth style transitions, enabling cinematic storytelling. 

Camera Control and Sequential Scenes

The Kling 2.1 API enhances both text-to-video and image-to-video capabilities, offering greater accuracy than Kling 1.6. It interprets complex prompts with improved semantic understanding, supporting JPEG, PNG, or WEBP inputs up to 10MB.

Text-to-Video and Image-to-Video Generation

Kling 2.1 API delivers rendering speeds up to 50% faster than Kling 1.6, producing 5-second clips in as little as 30 seconds. Optimized algorithms ensure consistent outputs, reducing glitches and morphing artifacts common in earlier versions. 

Faster and More Consistent Video Rendering

The Kling 2.1 API offers customizable parameters like duration, negative prompts, and CFG scale for tailored outputs. This flexibility allows developers to fine-tune video quality and content, avoiding unwanted elements and ensuring prompt adherence.

Customizable Parameters for Precision

Kie.ai’s Kling 2.1 API uses a credit-based system, starting at just $5 for entry-level purchases. The more credits you buy, the bigger the discount, ensuring cost savings for high-volume users. No subscriptions mean you only pay for what you use, making Kling 2.1 API pricing flexible and accessible for creators and businesses of all sizes.

Kling API Pricing: Affordable and Flexible Options

Create a account on Kie.ai to access your secure Kling 2.1 API key from the developer dashboard. This key authenticates your requests, enabling access to Standard, Pro, or Master versions for generating videos tailored to your project’s needs, from social media clips to cinematic productions.

Obtain Your Kling 2.1 API Key

Prepare a JSON payload specifying the model (e.g., "kling/v2-1-master-image-to-video"), input parameters like text prompts or image URLs, and optional settings like duration or negative prompts. The Kling 2.1 API supports versatile inputs, allowing you to craft detailed video descriptions or use images for precise creative control.

Configure Your Kling API Request

Use an HTTP POST request to the Kling API endpoint with your API key and JSON payload. This triggers video generation, returning a task ID to track progress, ensuring efficient integration into your app or workflow with minimal latency.

Send Requests to the Kling 2.1 API Endpoint

Monitor task status using the task ID or set up a callback URL for automatic notifications upon completion. The Kling 2.1 API delivers generated video URLs, ready for download and integration into your platform, streamlining the process for professional-grade video outputs.

Handle Responses and Retrieve Videos

How to Integrate Kling 2.1 API on Kie.ai

The Kling 2.1 API is a robust interface for generating high-quality videos using the Kling 2.1 model on Kie.ai. It transforms text prompts or images into dynamic videos with realistic motion and physics, accessible via simple HTTP POST requests, making it ideal for apps, marketing, or creative projects.

What is the Kling 2.1 API on Kie.ai? 

Kling 2.1 API pricing starts at $0.125 per 5-second video for the Standard version, $0.25 for Pro, and $0.80 for Master. Using a credit-based system with no subscriptions, you can purchase credits starting at $5, with bulk discounts for cost-effective scaling.

How much does the Kling 2.1 API cost for video generation?

The Kling API offers high-resolution outputs (up to 1080p), realistic motion, camera controls, and versatile text-to-video or image-to-video generation. Compared to Kling 1.6, it delivers faster rendering and fewer artifacts, making it a top choice for dynamic, high-quality video production.

What are the key features of the Kling API for video creation?

Kling 2.1 API integration is straightforward, requiring only an API key and HTTP POST requests to Kie.ai’s endpoint. With comprehensive documentation and support for languages like Python or JavaScript, developers can quickly integrate video generation into apps or workflows with minimal setup.

How to integrate Kling 2.1 API for developers?

The Kling 2.1 Master API unique lies in its ability to generate hyper-realistic 1080p videos with advanced physics, dynamic camera controls. It supports both text-to-video and image-to-video generation, allowing creators to craft detailed scenes from text prompts or images. 

What makes the Kling 2.1 Master API unique for video projects?

The Kling 2.1 API supports JPEG, PNG, and WEBP image inputs (up to 10MB) for image-to-video generation. Generated videos are delivered in standard formats, ensuring compatibility with most platforms and workflows.

What file formats are supported by the Kling 2.1 API for inputs?

The Kling 2.1 API compare to Veo 3 offers competitive advantages in affordability and video length. While both deliver 1080p videos with smooth motion, Kling 2.1 API starts at $0.125 per 5 seconds versus Veo 3’s $0.4+ on Kie.ai, and supports up to 10-second clips compared to Veo’s 8-second limit.

How does Kling 2.1 API compare to Veo 3 API in AI video generation? 

Kie.ai stands out for its affordable Kling API pricing, starting at $0.125 per 5 seconds, alongside comprehensive API documentation and responsive technical support. With a stable platform supporting high concurrency, it ensures reliable performance for demanding workflows.

Why choose Kie.ai for Kling 2.1 API over other AI API platforms?

Frequently Asked Questions about Kling 2.1 API

The Kling 2.1 API on Kie.ai is affordable and developer-friendly, offering 1080p resolution and realistic motion effects. It is stable, supports high concurrency, and enables fast video generation integration.

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