> ## Documentation Index
> Fetch the complete documentation index at: https://docs.platform.decart.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Models
> Explore Decart's AI models for video and image transformation
Decart offers state-of-the-art AI models for realtime and batch video transformation, lip synchronization, and image editing. Our models are optimized for creative applications, delivering professional-quality results with minimal latency.
**Lucy 2.1 supports both character reference images and text-only editing in one model.** [Get started →](/models/realtime/lucy-2.1)
## Realtime models
Realtime models process live video and audio with low latency. They run continuously as long as the connection is open.
| Model | ID | Resolution | Use Case |
| ------------------ | ---------------- | ---------- | ---------------------- |
| **Lucy 2.1** | `lucy-2.1` | 720p | Video editing (latest) |
| **Lucy 2.1 VTON** | `lucy-2.1-vton` | 720p | Virtual try-on |
| **Lucy Restyle 2** | `lucy-restyle-2` | 720p | Video restyling |
## Video models
Video models process pre-recorded video asynchronously. Submit a job, poll for completion, then download the result.
| Model | ID | Resolution | Use Case |
| ------------------ | ---------------- | ---------- | ---------------------- |
| **Lucy 2.1** | `lucy-2.1` | 720p | Video editing (latest) |
| **Lucy 2.1 VTON** | `lucy-2.1-vton` | 720p | Virtual try-on |
| **Lucy Restyle 2** | `lucy-restyle-2` | 720p | Video restyling |
| Model | ID | Resolution | Use Case |
| ------------- | ----------- | ---------- | ------------- |
| **Lucy Clip** | `lucy-clip` | 720p | Video editing |
## Image models
Image models edit and transform images.
| Model | ID | Resolution | Use Case |
| ---------------- | -------------- | ---------- | ------------- |
| **Lucy Image 2** | `lucy-image-2` | 480p, 720p | Image editing |
## Latest aliases
Use `-latest` aliases to always target the newest version of a model family. The server resolves these to the current latest version automatically, so your code stays up to date without changes.
| Alias | Type | Currently resolves to |
| --------------------- | ---------------- | --------------------- |
| `lucy-latest` | realtime + video | `lucy-2.1` |
| `lucy-vton-latest` | realtime + video | `lucy-vton-2` |
| `lucy-restyle-latest` | realtime + video | `lucy-restyle-2` |
| `lucy-clip-latest` | video | `lucy-clip` |
| `lucy-image-latest` | image | `lucy-image-2` |
```typescript theme={null}
// Always use the latest Lucy model — no code changes needed when new versions ship
const model = models.realtime("lucy-latest");
const result = await client.queue.submitAndPoll({
model: models.video("lucy-latest"),
prompt: "Anime style",
data: videoFile,
});
```
## Technical Specifications
### Video Requirements
All video models accept MP4 files with these specifications:
* **Format:** MP4 (H.264 or VP8 codec)
* **Aspect Ratio:** 16:9 or 9:16
* **File Size:** Maximum 200MB
## Choosing the Right Model
### Decision Matrix
| If you need to... | Use this model | Why? |
| -------------------------------------- | ------------------------------------- | ------------------------------------------------------------------------------------------- |
| Transform or edit live video on camera | **Lucy 2.1** (`lucy-2.1`) | Character reference images + text editing in one realtime model (latest) |
| Apply artistic styles to a live stream | **Lucy Restyle 2** (`lucy-restyle-2`) | Full scene restyling in realtime |
| Transform or edit existing video | **Lucy 2.1** (`lucy-2.1`) | Best quality, fastest speed, unlimited duration, supports prompt + reference image (latest) |
| Edit or transform an image | **Lucy Image 2** (`lucy-image-2`) | Precise image editing |
### Quick Start Examples
```typescript Lucy 2.1 (realtime) theme={null}
import { createDecartClient, models } from "@decartai/sdk";
const client = createDecartClient({ apiKey: "your-api-key-here" });
const model = models.realtime("lucy-latest");
const stream = await navigator.mediaDevices.getUserMedia({
video: { frameRate: model.fps, width: model.width, height: model.height },
});
const realtimeClient = await client.realtime.connect(stream, {
model,
onRemoteStream: (s) => { document.getElementById("output").srcObject = s; },
});
// Character transformation
const photo = document.querySelector("input[type=file]").files[0];
await realtimeClient.set({ prompt: "Transform into this character", image: photo, enhance: true });
```
```typescript Lucy Restyle 2 (realtime) theme={null}
import { createDecartClient, models } from "@decartai/sdk";
const client = createDecartClient({ apiKey: "your-api-key-here" });
const realtimeClient = await client.realtime.connect(stream, {
model: models.realtime("lucy-restyle-2"),
onRemoteStream: (s) => { document.getElementById("output").srcObject = s; },
initialState: { prompt: { text: "Cartoon style", enhance: true } },
});
// Switch styles on the fly
realtimeClient.setPrompt("Cyberpunk city");
```
```typescript Lucy 2.1 (batch) theme={null}
import { createDecartClient, models } from "@decartai/sdk";
const client = createDecartClient({ apiKey: "your-api-key-here" });
const result = await client.queue.submitAndPoll({
model: models.video("lucy-latest"),
prompt: "Anime style transformation",
data: videoFile,
resolution: "720p",
});
if (result.status === "completed") {
const buffer = Buffer.from(await result.data.arrayBuffer());
writeFileSync("output.mp4", buffer);
}
```
## Pricing
For detailed pricing information, see the [Pricing page](/getting-started/pricing).
## Next Steps
Character transformation with reference images in realtime
Explore what you can build with realtime and batch models
Transform your first video in minutes
Detailed API documentation
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