# Lightricks LTX 2.3 Fast Text to Video API

> Ltx 2.3 Fast by Lightricks - generate cinematic videos from text descriptions with AI. Create high-quality video content with natural motion, camera control, and optional audio generation.

Source: https://www.sandbase.ai/model/lightricks/ltx-2.3-fast/text-to-video
API reference: https://www.sandbase.ai/model/lightricks/ltx-2.3-fast/text-to-video/docs

## Facts

- Provider: Lightricks
- Type: Video model
- Model ID: `lightricks/ltx-2.3-fast/text-to-video`
- Price: From $0.36 per run
- Capabilities: text to video
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

- Unified Run API: `POST https://api.sandbase.ai/v1/run`

```bash
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "lightricks/ltx-2.3-fast/text-to-video",
  "prompt": "Drone descent through the open oculus of a derelict Soviet-era radio telescope dish, spiraling downward into the rusted parabolic bowl where a lone botanist catalogs wildflowers growing through cracked concrete, her red jacket the only color against oxidized metal and grey sky, 24mm on a caged FPV drone, the descent creating a vertigo spiral, Tarkovsky Stalker zones of alien beauty reclaiming technology, science swallowed by nature",
  "duration": 6,
  "resolution": "1080p",
  "aspect_ratio": "16:9",
  "generate_audio": true
}'
```

The response returns a run id; poll `GET https://api.sandbase.ai/v1/run/{id}` until the status is `completed` or `failed`.

## FAQ

### How do I call Lightricks LTX 2.3 Fast Text to Video through SandBase?

Create a SandBase API key, then send requests with the model ID "lightricks/ltx-2.3-fast/text-to-video" to Unified Run API (/v1/run) at https://api.sandbase.ai. The request examples on this page show the exact payload.

### Do I need a separate Lightricks account?

No. One SandBase API key and balance gives you access to Lightricks LTX 2.3 Fast Text to Video and the other models in the catalog; you do not need to sign up with Lightricks separately.

## README

### LTX 2.3 Fast Text to Video

LTX 2.3 Fast text to video: up to 20 second clips with native audio at 1080p, 1440p, or 4K (2160p).

#### Fields

| Field | Type | Default | Notes |
|---|---|---|---|
| `prompt` | string, required | — | Up to 5,000 characters. |
| `aspect_ratio` | `16:9` / `9:16` | `16:9` | Output frame shape. |
| `resolution` | `1080p` / `1440p` / `2160p` | `1080p` | Sets the per-second rate. |
| `duration` | 6 / 8 / 10 / 12 / 14 / 16 / 18 / 20 | 6 | Output length in seconds. |
| `generate_audio` | boolean | true | Native audio. |

#### Billing

You pay for output seconds: $0.06 at 1080p, $0.12 at 1440p, $0.24 at 2160p.

| Output | 1080p | 1440p | 2160p |
|---|---|---|---|
| 6s (default) | $0.36 | $0.72 | $1.44 |
| 10s | $0.60 | $1.20 | $2.40 |
| 20s | $1.20 | $2.40 | $4.80 |

Failed runs are not charged.

#### Prompting

- Describe subject, action, camera, and sound.

#### Also on SandBase

Other LTX 2.3 endpoints: `lightricks/ltx-2.3-pro/text-to-video`, `lightricks/ltx-2.3-pro/image-to-video`, `lightricks/ltx-2.3-pro/audio-to-video`, `lightricks/ltx-2.3-pro/retake`.