VARIANT · Kuaishou / Kling

Kling kling-v2.1-pro API

Same API key, same model skill workflow — switch variants by changing one model ID.

Operational · video · Commercial OK

runapi.ai

curl -X POST https://runapi.ai/api/v1/kling/image_to_video \
  -H "Authorization: Bearer $RUNAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "kling-v2.1-pro",
  "image_url": "https://cdn.runapi.ai/public/samples/image.jpg",
  "prompt": "Create a 10-second video of a person walking through an autumn forest, leaves falling, cinematic camera pan."
}'

import { KlingClient } from "@runapi.ai/kling";

const client = new KlingClient();
const result = await client.imageToVideo.run({
    model: "kling-v2.1-pro",
    image_url: "https://cdn.runapi.ai/public/samples/image.jpg",
    prompt: "Create a 10-second video of a person walking through an autumn forest, leaves falling, cinematic camera pan.",
});

require "runapi/kling"

client = RunApi::Kling::Client.new
result = client.image_to_video.run(
    model: "kling-v2.1-pro",
    image_url: "https://cdn.runapi.ai/public/samples/image.jpg",
    prompt: "Create a 10-second video of a person walking through an autumn forest, leaves falling, cinematic camera pan."
)

npx skills add runapi-ai/kling -g

# Claude Code
claude mcp add runapi -s user -- npx -y @runapi.ai/mcp

# Codex
codex plugin install runapi-mcp@agents

# Cursor / Windsurf / VS Code
npx @runapi.ai/mcp init cursor

@runapi.ai/kling v1

Switch variant

kling-3.0 kling-ai-avatar-pro kling-ai-avatar-standard kling-ai-avatar-v1-pro kling-v1-avatar-standard kling-v2.1-master-image-to-video kling-v2.1-master-text-to-video kling-v2.1-standard kling-v2.5-turbo-image-to-video-pro kling-v2.5-turbo-text-to-video-pro

OVERVIEW

kling-v2.1-pro targets the sweet spot of quality and cost within the Kling family.

Pay-per-call pricing in USD
Failed generations not charged
Streaming when supported by the model
Schema-validated tool calls

PRICING

Pricing

Failed generations are not charged

Image to video

$0.10 / second

SPEC SHEET

Technical details

Model ID	kling-v2.1-pro
Provider	Kuaishou
Modality	video
Task type	asynchronous
Billing unit	second
API endpoint	/api/v1/kling/image_to_video
Commercial license	Yes — included via API
Status	Operational

SKILLS

Model skill — kling-v2.1-pro

Install the skill once, then use the variant ID from this page while building.

# Install the model skill for app development workflows
npx skills add runapi-ai/kling -g

Installs docs, schemas, pricing context, and setup notes into your developer workspace.

Or use this setup request in your coding tool:

Install the Kling skill for this app:

1. Add runapi-ai/kling with the skills installer.
2. Load SKILL.md in this workspace.
3. Use its docs, schemas, pricing notes, and setup steps when adding model features.
4. Confirm the install path when done.

HOW IT WORKS