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

# LTX-2.3: ComfyUI Workflow Examples

> Learn how to use LTX-2.3 in ComfyUI with native workflows for text-to-video, image-to-video, FLF2V, audio-driven video, IC-LoRA control, and ID-LoRA personalization.

[LTX-2.3](https://huggingface.co/Lightricks/LTX-2.3) is the latest evolution of Lightricks' open-source audio-video generation model, now natively supported in ComfyUI. Building on LTX-2, this release delivers major quality improvements across fine details, portrait video, audio quality, image-to-video consistency, prompt understanding, and text rendering.

ComfyUI ships with six native workflows for LTX-2.3, each designed for a specific generation mode:

* **Text-to-Video** (T2V): Generate videos from text prompts
* **Image-to-Video** (I2V): Generate videos from an input image
* **FLF2V**: Interpolate between a start and end image
* **Image-Audio-to-Video** (IA2V): Generate lip-synced videos from an image and audio
* **IC-LoRA Union Control**: Control video generation with depth, pose, or edge guidance
* **ID-LoRA**: Generate personalized videos with synchronized audio from a reference image and audio clip

<Tip>
  <Tabs>
    <Tab title="Local users">
      Make sure your ComfyUI is updated.

      * [Download ComfyUI](https://www.comfy.org/download)
      * [Update Guide](/installation/update_comfyui)

      Workflows in this guide can be found in the [Workflow Templates](/interface/features/template).
      If you can't find them in the template, your ComfyUI may be outdated.

      If nodes are missing when loading a workflow, possible reasons:

      1. You are not using the latest ComfyUI version (Nightly version)
      2. Some nodes failed to import at startup
    </Tab>

    <Tab title="Cloud users">
      * [Cloud](https://cloud.comfy.org) will update after ComfyUI stable release.

      So, if you find any core node missing in this document, it might be because the new core nodes have not yet been released in the latest stable version. Please wait for the next stable release.
    </Tab>
  </Tabs>
</Tip>

## Key features

* **Finer details**: New latent space and updated VAE for sharper textures, cleaner edges, and more precise visuals
* **9:16 Portrait support**: Greatly improved quality for vertical portrait videos
* **Better audio**: Cleaner sound with reduced noise and enhanced dialogue
* **Improved image-to-video**: More consistent motion and fewer glitches
* **Smarter prompt understanding**: Improved text encoder for more accurate interpretation
* **Native ComfyUI support**: All workflows are built-in, no custom nodes required

## Getting started

LTX-2.3 is natively supported in ComfyUI. To get started:

1. Update ComfyUI to the latest version
2. Go to **Template Library** > **Video** > choose any LTX-2.3 workflow
3. Follow the pop-up to download models and run the workflow

## ComfyUI Native Workflows

### LTX-2.3 Text to Video (T2V)

Generate videos from text prompts with improved prompt understanding and text rendering.

<video controls className="w-full aspect-video" src="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/output/video_ltx2_3_t2v.mp4" />

<CardGroup cols={2}>
  <Card title="Run in Comfy Cloud" icon="cloud" href="https://cloud.comfy.org/?template=video_ltx2_3_t2v&utm_source=docs&utm_medium=referral&utm_campaign=ltx-2-3">
    Open in Comfy Cloud
  </Card>

  <Card title="Download Workflow" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/video_ltx2_3_t2v.json">
    Download JSON or search "LTX-2.3 T2V" in Template Library
  </Card>
</CardGroup>

#### Model downloads

<CardGroup cols={2}>
  <Card title="Checkpoint: ltx-2.3-22b-dev-fp8" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3-fp8/blob/main/ltx-2.3-22b-dev-fp8.safetensors">
    Place in <code>ComfyUI/models/checkpoints/</code>
  </Card>

  <Card title="LoRA: distilled 1.1" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2.3/blob/main/split_files/loras/ltx_2.3_22b_distilled_1.1_lora_dynamic_fro09_avg_rank_111_bf16.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="LoRA: gemma abliterated" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/loras/gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="Text Encoder: gemma 12B" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/text_encoders/gemma_3_12B_it_fp4_mixed.safetensors">
    Place in <code>ComfyUI/models/text\_encoders/</code>
  </Card>

  <Card title="Upscaler: spatial x2" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3/blob/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors">
    Place in <code>ComfyUI/models/latent\_upscale\_models/</code>
  </Card>
</CardGroup>

#### Model storage

```
ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   └── ltx-2.3-22b-dev-fp8.safetensors
│   ├── 📂 loras/
│   │   ├── ltx_2.3_22b_distilled_1.1_lora_dynamic_fro09_avg_rank_111_bf16.safetensors
│   │   └── gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors
│   ├── 📂 text_encoders/
│   │   └── gemma_3_12B_it_fp4_mixed.safetensors
│   └── 📂 latent_upscale_models/
│       └── ltx-2.3-spatial-upscaler-x2-1.1.safetensors
```

#### Prompting tips

1. **Core Actions**: Describe events and actions as they occur over time
2. **Visual Details**: Describe all visual details you want to appear in the video
3. **Audio**: Describe sounds and dialogue needed for the scene

***

### LTX-2.3 Image to Video (I2V)

Generate videos from an input image with more consistent motion and smoother animations.

<video controls className="w-full aspect-video" src="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/output/video_ltx2_3_i2v.mp4" />

<CardGroup cols={2}>
  <Card title="Run in Comfy Cloud" icon="cloud" href="https://cloud.comfy.org/?template=video_ltx2_3_i2v&utm_source=docs&utm_medium=referral&utm_campaign=ltx-2-3">
    Open in Comfy Cloud
  </Card>

  <Card title="Download Workflow" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/video_ltx2_3_i2v.json">
    Download JSON or search "LTX-2.3 I2V" in Template Library
  </Card>
</CardGroup>

<CardGroup cols={1}>
  <Card title="Input Image: egyptian_queen.png" icon="image" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/egyptian_queen.png">
    Download the default input image, or use your own image.
  </Card>
</CardGroup>

#### Model downloads

The I2V workflow uses the same model set as Text-to-Video.

<CardGroup cols={2}>
  <Card title="Checkpoint: ltx-2.3-22b-dev-fp8" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3-fp8/blob/main/ltx-2.3-22b-dev-fp8.safetensors">
    Place in <code>ComfyUI/models/checkpoints/</code>
  </Card>

  <Card title="LoRA: distilled 1.1" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2.3/blob/main/split_files/loras/ltx_2.3_22b_distilled_1.1_lora_dynamic_fro09_avg_rank_111_bf16.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="LoRA: gemma abliterated" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/loras/gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="Text Encoder: gemma 12B" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/text_encoders/gemma_3_12B_it_fp4_mixed.safetensors">
    Place in <code>ComfyUI/models/text\_encoders/</code>
  </Card>

  <Card title="Upscaler: spatial x2" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3/blob/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors">
    Place in <code>ComfyUI/models/latent\_upscale\_models/</code>
  </Card>
</CardGroup>

#### Model storage

```
ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   └── ltx-2.3-22b-dev-fp8.safetensors
│   ├── 📂 loras/
│   │   ├── ltx_2.3_22b_distilled_1.1_lora_dynamic_fro09_avg_rank_111_bf16.safetensors
│   │   └── gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors
│   ├── 📂 text_encoders/
│   │   └── gemma_3_12B_it_fp4_mixed.safetensors
│   └── 📂 latent_upscale_models/
│       └── ltx-2.3-spatial-upscaler-x2-1.1.safetensors
```

***

### LTX-2.3 FLF2V

Interpolate between a start image and an end image to generate a smooth video transition.

<video controls className="w-full aspect-video" src="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/output/video_ltx2_3_flf2v.mp4" />

<CardGroup cols={2}>
  <Card title="Run in Comfy Cloud" icon="cloud" href="https://cloud.comfy.org/?template=video_ltx2_3_flf2v&utm_source=docs&utm_medium=referral&utm_campaign=ltx-2-3">
    Open in Comfy Cloud
  </Card>

  <Card title="Download Workflow" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/video_ltx2_3_flf2v.json">
    Download JSON or search "LTX-2.3 FLF2V" in Template Library
  </Card>
</CardGroup>

<CardGroup cols={2}>
  <Card title="Start Image: high_view_classic_car.png" icon="image" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/high_view_classic_car.png">
    First frame of the video.
  </Card>

  <Card title="End Image: low_view_classic_car.png" icon="image" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/low_view_classic_car.png">
    Last frame of the video.
  </Card>
</CardGroup>

#### Model downloads

The FLF2V workflow uses the distilled checkpoint instead of the dev checkpoint.

<CardGroup cols={2}>
  <Card title="Checkpoint: ltx-2.3-22b-distilled-fp8" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3-fp8/blob/main/ltx-2.3-22b-distilled-fp8.safetensors">
    Place in <code>ComfyUI/models/checkpoints/</code>
  </Card>

  <Card title="Text Encoder: gemma 12B" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/text_encoders/gemma_3_12B_it_fp4_mixed.safetensors">
    Place in <code>ComfyUI/models/text\_encoders/</code>
  </Card>
</CardGroup>

#### Model storage

```
ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   └── ltx-2.3-22b-distilled-fp8.safetensors
│   └── 📂 text_encoders/
│       └── gemma_3_12B_it_fp4_mixed.safetensors
```

***

### LTX-2.3 Image Audio to Video (IA2V)

Upload an image and an audio file to generate a high-quality video with synchronized lip movements.

<video controls className="w-full aspect-video" src="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/output/video_ltx2_3_ia2v.mp4" />

<CardGroup cols={2}>
  <Card title="Run in Comfy Cloud" icon="cloud" href="https://cloud.comfy.org/?template=video_ltx2_3_ia2v&utm_source=docs&utm_medium=referral&utm_campaign=ltx-2-3">
    Open in Comfy Cloud
  </Card>

  <Card title="Download Workflow" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/video_ltx2_3_ia2v.json">
    Download JSON or search "LTX-2.3 IA2V" in Template Library
  </Card>
</CardGroup>

<CardGroup cols={2}>
  <Card title="Input Image: cactus_man.png" icon="image" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/cactus_man.png">
    Reference image for the speaking character.
  </Card>

  <Card title="Reference Audio: ltx_23_audio.mp3" icon="music" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/ltx_23_audio.mp3">
    Audio track for lip synchronization.
  </Card>
</CardGroup>

#### Model downloads

The IA2V workflow uses the same model set as Text-to-Video.

<CardGroup cols={2}>
  <Card title="Checkpoint: ltx-2.3-22b-dev-fp8" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3-fp8/blob/main/ltx-2.3-22b-dev-fp8.safetensors">
    Place in <code>ComfyUI/models/checkpoints/</code>
  </Card>

  <Card title="LoRA: distilled 1.1" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2.3/blob/main/split_files/loras/ltx_2.3_22b_distilled_1.1_lora_dynamic_fro09_avg_rank_111_bf16.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="LoRA: gemma abliterated" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/loras/gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="Text Encoder: gemma 12B" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/text_encoders/gemma_3_12B_it_fp4_mixed.safetensors">
    Place in <code>ComfyUI/models/text\_encoders/</code>
  </Card>

  <Card title="Upscaler: spatial x2" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3/blob/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors">
    Place in <code>ComfyUI/models/latent\_upscale\_models/</code>
  </Card>
</CardGroup>

#### Model storage

```
ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   └── ltx-2.3-22b-dev-fp8.safetensors
│   ├── 📂 loras/
│   │   ├── ltx_2.3_22b_distilled_1.1_lora_dynamic_fro09_avg_rank_111_bf16.safetensors
│   │   └── gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors
│   ├── 📂 text_encoders/
│   │   └── gemma_3_12B_it_fp4_mixed.safetensors
│   └── 📂 latent_upscale_models/
│       └── ltx-2.3-spatial-upscaler-x2-1.1.safetensors
```

***

### LTX-2.3 IC-LoRA Union Control

Generate LTX-2.3 videos with IC-LoRA using aligned control inputs like depth, pose, or edges. IC-LoRA is an in-context LoRA trained on top of LTX-2.3 that applies structural guidance from a reference video. It accepts control signals from various preprocessors including depth maps, Canny edges, and pose skeletons. This workflow uses a subgraph for modular processing.

![LTX-2.3 IC-LoRA preview](https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/templates/video_ltx2_3_ic_lora-1.webp)

<CardGroup cols={2}>
  <Card title="Run in Comfy Cloud" icon="cloud" href="https://cloud.comfy.org/?template=video_ltx2_3_ic_lora&utm_source=docs&utm_medium=referral&utm_campaign=ltx-2-3">
    Open in Comfy Cloud
  </Card>

  <Card title="Download Workflow" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/video_ltx2_3_ic_lora.json">
    Download JSON or search "LTX-2.3 IC-LoRA" in Template Library
  </Card>
</CardGroup>

<Card title="Learn about Subgraph" icon="book-open" href="/interface/features/subgraph">
  This workflow uses a Subgraph node for modular processing. Check out the Subgraph documentation to learn how to customize and extend the workflow.
</Card>

#### Input materials

<CardGroup cols={2}>
  <Card title="Control Video: stone_ruins.mp4" icon="video" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/stone_ruins.mp4">
    Driving video for control signal extraction.
  </Card>

  <Card title="Reference Image: the_forgotten_gate.png" icon="image" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/the_forgotten_gate.png">
    Reference image for style and content.
  </Card>
</CardGroup>

#### Model downloads

<CardGroup cols={2}>
  <Card title="Checkpoint: ltx-2.3-22b-distilled-fp8" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3-fp8/blob/main/ltx-2.3-22b-distilled-fp8.safetensors">
    Place in <code>ComfyUI/models/checkpoints/</code>
  </Card>

  <Card title="LoRA: IC-LoRA Union Control" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3-22b-IC-LoRA-Union-Control/blob/main/ltx-2.3-22b-ic-lora-union-control-ref0.5.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="LoRA: gemma abliterated" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/loras/gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="Text Encoder: gemma 12B" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/text_encoders/gemma_3_12B_it_fp4_mixed.safetensors">
    Place in <code>ComfyUI/models/text\_encoders/</code>
  </Card>

  <Card title="Geometry: MoGe Normal" icon="download" href="https://huggingface.co/Comfy-Org/MoGe/blob/main/geometry_estimation/moge_2_vitl_normal_fp16.safetensors">
    Place in <code>ComfyUI/models/geometry\_estimation/</code>
  </Card>
</CardGroup>

#### Model storage

```
ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   └── ltx-2.3-22b-distilled-fp8.safetensors
│   ├── 📂 loras/
│   │   ├── ltx-2.3-22b-ic-lora-union-control-ref0.5.safetensors
│   │   └── gemma-3-12b-it-abliterated_lora_rank64_bf16.safetensors
│   ├── 📂 text_encoders/
│   │   └── gemma_3_12B_it_fp4_mixed.safetensors
│   └── 📂 geometry_estimation/
│       └── moge_2_vitl_normal_fp16.safetensors
```

***

### LTX-2.3 ID-LoRA

Generate personalized videos with synchronized audio from a text prompt, reference image, and short audio clip. Uses ID-LoRA to adapt a person's appearance and voice in a single generative model.

<video controls className="w-full aspect-video" src="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/output/video_ltx2_3_id_lora.mp4" />

<CardGroup cols={2}>
  <Card title="Run in Comfy Cloud" icon="cloud" href="https://cloud.comfy.org/?template=video_ltx2_3_id_lora&utm_source=docs&utm_medium=referral&utm_campaign=ltx-2-3">
    Open in Comfy Cloud
  </Card>

  <Card title="Download Workflow" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/video_ltx2_3_id_lora.json">
    Download JSON or search "LTX-2.3 ID-LoRA" in Template Library
  </Card>
</CardGroup>

<CardGroup cols={2}>
  <Card title="Reference Image: vintage_thinker.png" icon="image" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/vintage_thinker.png">
    Reference image for the character appearance.
  </Card>

  <Card title="Reference Audio: ltx23_reference_audio.mp3" icon="music" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/ltx23_reference_audio.mp3">
    Audio clip for voice cloning and lip sync.
  </Card>
</CardGroup>

#### Model downloads

<CardGroup cols={2}>
  <Card title="Checkpoint: ltx-2.3-22b-dev-fp8" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3-fp8/blob/main/ltx-2.3-22b-dev-fp8.safetensors">
    Place in <code>ComfyUI/models/checkpoints/</code>
  </Card>

  <Card title="LoRA: distilled 1.1" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2.3/blob/main/split_files/loras/ltx_2.3_22b_distilled_1.1_lora_dynamic_fro09_avg_rank_111_bf16.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="LoRA: ID-LoRA TalkVid" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2.3/blob/main/split_files/loras/ltx-2.3-id-lora-talkvid-3k.safetensors">
    Place in <code>ComfyUI/models/loras/</code>
  </Card>

  <Card title="Text Encoder: gemma 12B" icon="download" href="https://huggingface.co/Comfy-Org/ltx-2/blob/main/split_files/text_encoders/gemma_3_12B_it_fp4_mixed.safetensors">
    Place in <code>ComfyUI/models/text\_encoders/</code>
  </Card>

  <Card title="Upscaler: spatial x2" icon="download" href="https://huggingface.co/Lightricks/LTX-2.3/blob/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors">
    Place in <code>ComfyUI/models/latent\_upscale\_models/</code>
  </Card>
</CardGroup>

#### Model storage

```
ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   └── ltx-2.3-22b-dev-fp8.safetensors
│   ├── 📂 loras/
│   │   ├── ltx_2.3_22b_distilled_1.1_lora_dynamic_fro09_avg_rank_111_bf16.safetensors
│   │   └── ltx-2.3-id-lora-talkvid-3k.safetensors
│   ├── 📂 text_encoders/
│   │   └── gemma_3_12B_it_fp4_mixed.safetensors
│   └── 📂 latent_upscale_models/
│       └── ltx-2.3-spatial-upscaler-x2-1.1.safetensors
```

## Prompting tips

When writing prompts for LTX-2.3, focus on detailed, chronological descriptions of actions and scenes:

1. **Core Actions**: Describe events and actions as they occur over time
2. **Visual Details**: Describe all visual details you want to appear in the video
3. **Audio**: Describe sounds and dialogue needed for the scene

## Resources

* [Hugging Face Model](https://huggingface.co/Lightricks/LTX-2.3)
* [GitHub Repository](https://github.com/Lightricks/LTX-2)
* [ComfyUI-LTXVideo](https://github.com/Lightricks/ComfyUI-LTXVideo/)
* [IC-LoRA Model](https://huggingface.co/Lightricks/LTX-2.3-22b-IC-LoRA-Union-Control)