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

# Topaz Starlight Fast 3

> Topaz's newest and fastest Starlight diffusion restoration model. See parameters, pricing, and API examples.

Topaz's newest Starlight model. It is built for much faster processing while delivering quality close to Starlight Precise.

## Model

```
topaz-labs/starlight-fast-3
```

## When to use

* You want Precise-level restoration with quicker turnaround.
* You are restoring AI-generated or archival video and want the latest Starlight generation.

**Pick something else when:**

* You want the lowest price: use [Starlight Fast 2](/models/video/topaz-labs/starlight-fast-2) (half the price).
* The footage is already clean and HD: use [Starlight HQ](/models/video/topaz-labs/starlight-hq).

<Note>
  Billed per second of the input video, counted at 30 fps: a 60 fps upload counts double and a 24 fps upload 0.8x, because every source frame is processed. Output `fps` does not change the price. `1440p` and `4k` use the 4K rate.
</Note>

## Parameters

| Parameter | Type | Required | Default | Description |
| - | - | - | - | - |
| `video_url` | string | Yes | - | Publicly-accessible URL of the source video |
| `resolution` | string | No | `1080p` | Output resolution (long edge). One of `720p`, `1080p`, `1440p`, `4k`. The short edge follows the source aspect ratio. The source must be smaller than this |
| `fps` | number | No | `30` | Output frame rate. One of `24`, `25`, `30`, `50`, `60`. Does not change the price |
| `nsfw_check` | boolean | No | `true` | Check uploaded media inputs for NSFW content |

## Example - Restore a clip to 4K

```bash theme={null}
curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "topaz-labs/starlight-fast-3",
    "input": {
      "video_url": "https://example.com/clip.mp4",
      "resolution": "4k"
    }
  }'
```

## Response

```json theme={null}
{
  "code": 200,
  "success": true,
  "data": {
    "task_id": "abc123def456",
    "status": "processing"
  }
}
```

<Note>
  **Volume discounts** are available for almost all models. Reach out at [contact@unifically.com](mailto:contact@unifically.com) to discuss custom pricing.
</Note>


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