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Kling 4 Flash API Pricing

By Kuaishou · 1 providerrunwayml/kling_4_flash
Price
$0.094 per second of video
Added

As of November 15, 2026, Kling 4 Flash costs $0.094 per second of video on Runway.

Prices updated Checked

Kling 4 Flash pricing by provider

1 listing across 1 provider. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

Kling 4 Flash prices by provider in US dollars, token prices per 1M tokens, as of November 15, 2026. Source: LiteLLM model price file.
ProviderModel name in LiteLLMPer secondContext
Runwayrunwayml/kling_4_flash$0.094–

What Kling 4 Flash costs in practice

100 clips of 8 seconds each

Runway$75.20

Kling 4 Flash features

Input: text, image, video. Output: video.

Use Kling 4 Flash with LiteLLM

Call Kling 4 Flash through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/videos. LiteLLM tracks the cost of every request at these prices.

Python SDK
from litellm import completion

response = completion(
    model="runwayml/kling_4_flash",
    messages=[{"role": "user", "content": "Hello!"}],
)
Proxy config.yaml
model_list:
  - model_name: kling_4_flash
    litellm_params:
      model: runwayml/kling_4_flash
      # credentials: see the provider's LiteLLM docs page
Call the proxy
curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $LITELLM_API_KEY" \
  -d '{
    "model": "kling_4_flash",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Kling 4 Flash FAQ

How much does Kling 4 Flash cost?

Kling 4 Flash costs $0.094 per second of video on Runway.

Which providers offer Kling 4 Flash?

Kling 4 Flash is available from Runway through LiteLLM, using the model name runwayml/kling_4_flash.

How do I call Kling 4 Flash with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="runwayml/kling_4_flash", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/videos from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

When did LiteLLM add Kling 4 Flash?

Kling 4 Flash was added to LiteLLM's model price file on November 11, 2026.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Maintainers update it from each provider's published pricing, and this page is usually rebuilt within 20 minutes of every change. Provider pricing pages:

LiteLLM docs: Runway.

Provider pages: Runway.