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Kling 2.1 API
The Kling 2.1 API is Kuaishou's tiered video generation API with Standard, Pro, and Master modes. Generate image-to-video or text-to-video clips up to 10 seconds — all through a single API endpoint.
Parameters
Drag and drop up to 2 files or click to upload
JPG, JPEG, PNG up to 10MB (max 2 files)
Output
Generated content will appear here
Kling 2.1 API Complete Guide
Learn how to integrate the Kling 2.1 API, explore its Standard, Pro, and Master tiers, and start generating video for your applications.
What is the Kling 2.1 API?
The Kling 2.1 API is Kuaishou's tiered video generation API with Standard, Pro, and Master modes. The Kling 2.1 Master API unlocks text-to-video plus aspect ratio control, the Kling 2.1 Pro API adds tail-image continuity for smoother shots, and the Kling 2.1 Standard API delivers fast, cost-efficient image-to-video generation.
All tiers support 5-second or 10-second clips. You can use negative prompts and CFG scale for precise outputs, and the async task workflow supports polling or callbacks.
Why Developers Choose the Kling 2.1 API
Key advantages that make the Kling 2.1 API stand out for video generation
Kling 2.1 API offers Standard, Pro, and Master tiers for different quality levels
Kling 2.1 Standard API delivers cost-efficient image-to-video generation
Kling 2.1 Pro API adds tail-image continuity for smoother shots
Kling 2.1 Master API enables text-to-video plus advanced controls
Up to 10-second clips with 5s/10s duration options
Aspect ratios for Kling 2.1 Master API text-to-video: 16:9, 9:16, 1:1
Negative prompt and CFG scale controls for precise outputs
Async task workflow with polling or callbacks
What Can You Build with the Kling 2.1 API?
From marketing teasers to storyboard previews, the Kling 2.1 API powers diverse video workflows
SMB Marketing & Ads
The Kling 2.1 API powers product teasers and brand animations for small and mid-sized marketing teams. Generate video from keyframes or still images in minutes.
Storyboard Previews
Create storyboard previews for creative teams using the Kling 2.1 Master API text-to-video mode. Iterate on concepts before full production.
Product Teasers
Turn product shots into dynamic teasers with the Kling 2.1 API. Image-to-video generation brings still photography to life.
Before/After Transformations
Use the Kling 2.1 Pro API tail-image mode for smooth before/after transitions and continuity in multi-shot sequences.
Concept & Storyboards
Rapidly prototype cinematic shots with the Kling 2.1 Master API. Text-to-video lets you explore ideas without sourcing footage.
Localization & Variations
Produce localization-safe visual variations using the Kling 2.1 API. Generate region-specific video content from shared prompts.
Kling 2.1 API Technical Specs
Duration, tiers, and output details for the Kling 2.1 API
Max Duration
Up to 10 seconds
Tiers
Standard, Pro, Master
Output Formats
MP4
Kling 2.1 API Developer Reviews
Feedback from teams using the Kling 2.1 API in production
“Incredible quality and speed. The Kling 2.1 API has transformed our content creation workflow entirely.”
John Smith
Senior Developer
“The Kling 2.1 API is dead simple to integrate and consistently delivers high-quality results. Highly recommended!”
Maria Johnson
Product Manager
“Clear API docs, fast response times, and the output quality from the Kling 2.1 API exceeds expectations.”
Alex Lee
Tech Lead
Kling 2.1 API Known Limitations
Current constraints to consider when integrating the Kling 2.1 API
Max video duration is 10 seconds
Supported durations are 5s or 10s
Standard and Master image modes require exactly 1 image
Pro image mode supports 1-2 images (second is tail)
Aspect ratio applies only to Master text-to-video
CFG scale must be between 0 and 1
Content must comply with provider safety policies
Start Building with the Kling 2.1 API Today
Try the Kling 2.1 API in the playground above, or jump straight into the documentation to integrate it into your project.