ComfyUI Official LTX-2.3 Workflow Examples — Templates, Models, Paths
Canonical ComfyUI reference for LTX-2.3: built-in I2V/T2V templates, required checkpoints, LoRAs, latent upscaler, Gemma 3 text encoder, and the exact model storage layout.
By ltx workflow
Editor's Note: The official ComfyUI docs page for LTX-2.3. It's the canonical reference for the bundled workflow templates and where to put each file. Mirrored here so the model + path conventions are easy to look up alongside our setup guide.
Key features
- Finer details: new latent space & updated VAE for sharper textures, cleaner edges, more precise visuals
- 9:16 portrait support: much-improved quality for vertical portrait videos, perfect for social media & mobile
- Better audio: cleaner sound with reduced noise, enhanced dialogue, music, and ambient audio
- Improved image-to-video: more consistent motion and fewer glitches (e.g. frozen frames) for smoother animations
- Smarter prompt understanding: improved text encoder for more accurate interpretation of complex prompts
- Clearer text rendering: more accurate text and letter rendering in videos
Getting started
- Update ComfyUI to the latest version.
- Open Template Library > Video and pick any LTX-2.3 workflow.
- Follow the popup to download the required models and run the workflow.
Workflows
ComfyUI ships two built-in LTX-2.3 templates:
Image-to-video
Standard I2V pipeline. Attach your reference image to LTXVImgToVideoConditioning. Video and synchronized audio are generated in a single diffusion pass.
Text-to-video
T2V pipeline using the same checkpoint and text encoder. No image input — LTXVImgToVideoConditioning is omitted.
Both templates can also run on Comfy Cloud if you don't have a local GPU with enough VRAM.
Model downloads
Checkpoints (place in ComfyUI/models/checkpoints/)
| Name | Description |
|---|---|
ltx-2.3-22b-dev.safetensors | BF16 full model |
ltx-2.3-22b-dev-fp8.safetensors | FP8 quantized model |
LoRAs (place in ComfyUI/models/loras/)
| Name |
|---|
ltx-2.3-22b-distilled-lora-384.safetensors |
Latent upscale models (place in ComfyUI/models/latent_upscale_models/)
| Name |
|---|
ltx-2.3-spatial-upscaler-x2-1.0.safetensors |
Text encoders (place in ComfyUI/models/text_encoders/)
| Name |
|---|
gemma_3_12B_it_fp4_mixed.safetensors |
Model storage location
ComfyUI/
├── models/
│ ├── latent_upscale_models/
│ │ └── ltx-2.3-spatial-upscaler-x2-1.0.safetensors
│ ├── checkpoints/
│ │ ├── ltx-2.3-22b-dev-fp8.safetensors
│ │ └── ltx-2.3-22b-dev.safetensors
│ ├── loras/
│ │ └── ltx-2.3-22b-distilled-lora-384.safetensors
│ └── text_encoders/
│ └── gemma_3_12B_it_fp4_mixed.safetensors