Video

Kling 2.1

Kling 2.1 supports tiered Kuaishou image-to-video generation plus master-quality text-to-video workflows with 5 or 10 second outputs.

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Four Kling modes

5 or 10 seconds

Master text-to-video

1-2 reference images

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Create with Kling 2.1

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Authentication & Integration

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Integrate with AI

Copy a prompt for your AI assistant to install APIXO MCP, read the live schema, and wire this model into your app.

Endpoints

POSThttps://api.apixo.ai/api/v1/generateTask/kling-2-1Create task

GEThttps://api.apixo.ai/api/v1/statusTask/kling-2-1?taskId={taskId}Poll status

Request body

request_type

async

Use callback with callback_url for webhooks.

input

object

Mode, prompt, references, size, duration, and audio settings.

Parameters

request_typerequired

Typeselect

Use async to poll statusTask, or callback to receive a webhook when the result is ready.async · callback

callback_urlconditional

Typetext

Public HTTPS URL for callback delivery.Only in request_type=callback

moderequired

Typeselect

Choose the video workflow supported by this model.standard-image-to-video · pro-image-to-video · master-text-to-video · master-image-to-video

promptrequired

Typestring

Describe the subject, action, scene, camera movement, lighting, and audio cues for the final video.

durationrequired

Typeselect

Clip length in seconds. Pricing may scale by duration.5 · 10

aspect_ratiorequired

Typeselect

Choose the output frame ratio when the selected mode supports it.16:9 · 9:16 · 1:1

negative_promptoptional

Typestring

Describe unwanted visual elements. Blank values are ignored.

cfg_scaleoptional

Typeslider

Prompt guidance scale. Recommended range is 0.3-0.7.

Parameter	Type	Required	Description
`request_type`	select	required	Use async to poll statusTask, or callback to receive a webhook when the result is ready.async · callback
`callback_url`	text	conditional	Public HTTPS URL for callback delivery.Only in request_type=callback
`mode`	select	required	Choose the video workflow supported by this model.standard-image-to-video · pro-image-to-video · master-text-to-video · master-image-to-video
`prompt`	string	required	Describe the subject, action, scene, camera movement, lighting, and audio cues for the final video.
`duration`	select	required	Clip length in seconds. Pricing may scale by duration.5 · 10
`aspect_ratio`	select	required	Choose the output frame ratio when the selected mode supports it.16:9 · 9:16 · 1:1
`negative_prompt`	string	optional	Describe unwanted visual elements. Blank values are ignored.
`cfg_scale`	slider	optional	Prompt guidance scale. Recommended range is 0.3-0.7.

File parameters (URL arrays)

image_urls[mode=standard-image-to-video | pro-image-to-video | master-image-to-video]Upload exactly one image for standard/master image modes, or 1-2 images for pro image-to-video.Only in mode=standard-image-to-video | pro-image-to-video | master-image-to-video

Example (cURL)

curl -X POST "https://api.apixo.ai/api/v1/generateTask/kling-2-1" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "request_type": "async",
    "input": {
      "mode": "standard-image-to-video",
      "prompt": "animate this still life scene with subtle camera movement",
      "duration": 5,
      "image_urls": [
        "https://example.com/source.jpg"
      ],
      "negative_prompt": "blur, low quality",
      "cfg_scale": 0.6
    }
  }'

Full API documentation

Kling 2.1 Tips

Create video generation with Kling 2.1

Use Kling 2.1 through APIXO to try prompts, inspect examples, compare costs, and keep useful settings ready for future generations.

Create

Start with an idea

Pick a model, tune the settings, and create in one place.

Write an idea

Describe what you want to make.

Use an example

Start from a ready-made style.

Adjust the look

Tune the key settings quickly.

Create

Generate when everything feels right.

Keep results

Save what you want to revisit.

Try again

Make the next version faster.

Kling 2.1 API Technical Specs

Current Kling 2.1 capabilities and important creation limits.

Kling 2.1 Modes

Standard, pro, and master Kling video workflows

Kling 2.1 Output

Four Kling modes

Kling 2.1 Controls

5 or 10 seconds / Master text-to-video

Kling 2.1 Latency

Typically 60-120 seconds

Kling Video API

Key Kling 2.1 capabilities

Kling 2.1 video generation

Use Kling 2.1 for Standard, pro, and master Kling video workflows creation with simple controls for prompts, references, and output settings.

Kling 2.1 reference control

Upload supported reference assets where available, then keep refining the same idea on the model page.

Kling 2.1 generation status

Keep track of longer video generations while the result is being prepared.

What can you build with Kling 2.1?

Kling 2.1 product videos

Create product reveals, ecommerce ads, launch clips, and campaign motion assets.

Kling 2.1 social creative

Generate short videos for social channels and iterate quickly across prompt, duration, resolution, and ratio settings.

Kling 2.1 storyboard workflows

Use text prompts and references to validate scenes, shots, and motion ideas before committing production budget.

Read FAQ

Kling 2.1 notes and questions

Prompt length must be 1-5000 characters.

Duration must be 5 or 10 seconds.

Master text-to-video does not accept image URLs.

Standard and master image modes require exactly one image; pro image mode supports 1-2 images.

Negative prompt is limited to 500 characters and cfg_scale must be between 0 and 1.

Yes. Use the Create tab to try prompts, upload supported inputs, and adjust settings directly in the browser.

APIXO

Create with Kling 2.1

Write a prompt, adjust the style, and generate your next image in one place.

Start creating View API docs