# Gen4.5 API Pricing

As of October 10, 2026, Gen4.5 costs $0.12 per second of video on Runway.

- Page: https://models.litellm.ai/models/gen4.5
- LiteLLM model name: `runwayml/gen4.5`
- Added to LiteLLM: August 24, 2026
- Prices updated: October 10, 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/gen4.5` | – | – | – | – | $0.12 | – |

## Cost examples

100 clips of 8 seconds each:

- Runway: $96.00

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="runwayml/gen4.5",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## FAQ

### How much does Gen4.5 cost?

Gen4.5 costs $0.12 per second of video on Runway.

### Which providers offer Gen4.5?

Gen4.5 is available from Runway through LiteLLM, using the model name runwayml/gen4.5.

### How do I call Gen4.5 with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="runwayml/gen4.5", 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 Gen4.5?

Gen4.5 was added to LiteLLM's model price file on August 24, 2026.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json