# Runway Gen-4.5 (Runway) — API pricing and providers

> Text- and image-to-video generation. Model id `runway/gen-4.5`. Video model by Runway.

- Page: https://infro.io/models/runway/gen-4.5
- Vendor: Runway (https://infro.io/models/runway)
- Modality: Video
- Endpoint through INFRO: `POST /v1/videos` at https://api.infro.io/v1
- List rate: $0.12 per second of video
- Rates checked: 2026-10-05

Rates are Runway's published list price: what the customer's own provider account bills, not an INFRO charge. INFRO is a BYOK control plane; it charges a software subscription and adds 0% to model spend.

## Providers that serve it

| Provider | Model id sent |
| --- | --- |
| OpenRouter | `runway/gen-4.5` |
| Runway | `gen4.5` |
| Replicate | `runwayml/gen-4.5` |

## Questions

### How much does the Runway Gen-4.5 API cost?

Runway's published list rate for Runway Gen-4.5 is $0.12 per second of video (checked 2026-10-05). The provider account you connect bills you at the rate on that account, so a negotiated rate replaces the list rate. INFRO adds 0% to model spend.

### Which providers serve Runway Gen-4.5?

In INFRO's provider registry, Runway Gen-4.5 can be served by OpenRouter, Runway and Replicate. You connect your own account with any of them, and INFRO routes and fails over between the ones you connect.

### What is the Runway Gen-4.5 model ID?

Request it from INFRO as "runway/gen-4.5". INFRO sends each provider its own id: OpenRouter "runway/gen-4.5", Runway "gen4.5", Replicate "runwayml/gen-4.5".

### How do I call Runway Gen-4.5 through an OpenAI-compatible API?

Point an OpenAI SDK, or any HTTP client, at https://api.infro.io/v1 with an INFRO gateway key and send model "runway/gen-4.5" to POST /v1/videos. INFRO runs the request on a provider account you connected and returns the provider's response with an estimated cost.

### Does INFRO mark up Runway Gen-4.5 usage?

No. Runway or the provider you connect bills model usage to your own account. INFRO charges a software subscription for routing, failover, observability, budgets and policy, and takes 0% of model spend.