> ## Documentation Index
> Fetch the complete documentation index at: https://docs.venice.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Runway Gen-4.5 API

> Runway Gen-4.5 API on Venice: text to video and image to video, 10s clips, from $0.162 per second. Anonymized access without your identity.

> [accordion] Plain-text specification
>
> ## Runway Gen-4.5 API
>
> Runway Gen-4.5 is a text to video and image to video model by Runway, available on the Venice API as `runway-gen4-5-text`. Requests are anonymized, so the provider never sees your identity.
>
> ### Runway Gen-4.5 API pricing
>
> | Model ID | Variant | Privacy | Price |
> | - | - | - | - |
> | `runway-gen4-5-text` | Text to video | Anonymized | from \$0.162 / sec |
> | `runway-gen4-5` | Image to video | Anonymized | from \$0.162 / sec |
>
> ### Runway Gen-4.5 specifications
>
> | Spec | Value |
> | - | - |
> | Provider | Runway |
> | Released | Apr 12, 2026 |
> | Privacy | Anonymized |
> | Status | Stable |
> | Modes | text to video and image to video |
> | Durations | 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s |
> | Aspect ratios | 16:9, 9:16 |
> | Audio | None |
>
> ### How to use the Runway Gen-4.5 API
>
> Send requests to `POST https://api.venice.ai/api/v1/video/queue` with `"model": "runway-gen4-5-text"` and your API key.
>
> ```bash theme={"system"}
> # 1. Queue the job (returns a queue_id)
> curl https://api.venice.ai/api/v1/video/queue \
>   -H "Authorization: Bearer $VENICE_API_KEY" \
>   -H "Content-Type: application/json" \
>   -d '{
>     "model": "runway-gen4-5-text",
>     "prompt": "Slow aerial drone shot over a misty mountain valley at golden hour",
>     "duration": "5s",
>     "aspect_ratio": "16:9"
>   }'
>
> # 2. Poll until the MP4 is ready
> curl https://api.venice.ai/api/v1/video/retrieve \
>   -H "Authorization: Bearer $VENICE_API_KEY" \
>   -H "Content-Type: application/json" \
>   -d '{ "model": "runway-gen4-5-text", "queue_id": "<queue_id>" }' --output video.mp4
> ```
>
> ### Related models
>
> * [Grok Imagine API](https://docs.venice.ai/models/grok-imagine-video.md): from \$0.0633 / sec
> * [PixVerse C1 API](https://docs.venice.ai/models/pixverse-c1.md): from \$0.0333 / sec
> * [Topaz Video Upscale API](https://docs.venice.ai/models/topaz-video-upscale.md): priced by source
> * [Kling O3 4K API](https://docs.venice.ai/models/kling-o3-4k.md): from \$0.462 / sec


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