# Kling 4 Flash API Pricing

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

- Page: https://models.litellm.ai/models/kling_4_flash
- Lab: Kuaishou
- LiteLLM model name: `runwayml/kling_4_flash`
- Added to LiteLLM: November 11, 2026
- Prices updated: November 11, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| Runway | `runwayml/kling_4_flash` | – | – | – | – | $0.094 | – |

## Cost examples

100 clips of 8 seconds each:

- Runway: $75.20

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="runwayml/kling_4_flash",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## 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.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json. Maintainers update it from each provider's published pricing, and this page is usually rebuilt within 20 minutes of every change.