# SkyReels V4 Fast API

> Skywork's SkyReels V4 Fast: text to video, image to video, first and last frames and reference to video, up to 1080p. By Skywork, on Revana from $0.08 per second of video.

- Model id: `skyreels-v4-fast`
- Kind: video
- Maker: Skywork
- Tasks: Text to video, Image to video, First + last frame, Reference to video
- Resolutions: 480p, 720p, 1080p
- Durations: 3 to 15 seconds
- Aspect ratios: 16:9, 4:3, 1:1, 9:16, 3:4
- Audio: silent only
- Routes: 1
- Status: live on the API
- Page: https://revana.si/models/skyreels-v4-fast

## Price (per second of video, USD)

| Resolution | Price | Credits |
|---|---|---|
| 480p | $0.08 | 8 |
| 720p | $0.11 | 11 |
| 1080p | $0.28 | 28 |

100 credits = $1. Charged once, only for the route that succeeds; failed generations cost nothing.

## Request

POST https://api.revana.si/v1/generations with `Authorization: Bearer $REVANA_API_KEY`:

```json
{
  "model": "skyreels-v4-fast",
  "input": {
    "prompt": "A slow dolly shot through a neon-lit night market in the rain, steam rising from food stalls",
    "resolution": "720p",
    "duration": 3,
    "aspect_ratio": "16:9"
  }
}
```

Poll `GET /v1/generations/{id}` until `status` is `succeeded` or `failed`, then download `GET /v1/generations/{id}/content`. Full API: https://revana.si/llms.txt

## Similar models

- [SkyReels V4 Standard](https://revana.si/models/skyreels-v4-std.md): from $0.11 per second of video
- [Seedance 2.5](https://revana.si/models/seedance-2.5.md): from $0.06 per second of video
- [Nemesis (aka Genjutsu)](https://revana.si/models/nemesis.md): from $0.08 per second of video
- [Nemesis Lite](https://revana.si/models/nemesis-lite.md): from $0.07 per second of video
- [Veo 3.1 Fast](https://revana.si/models/veo-3.1-fast.md): from $0.08 per second of video
- [Veo 3.1](https://revana.si/models/veo-3.1.md): from $0.20 per second of video