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LTXV 2.3

Video Lecture

Section Video Links
LTXV 2.3 LTXV 2.3 LTXV 2.3

Description

LTX 2.3 is intended to be run on very high end GPUs with a lot of VRAM.

However, we can use the GGUF quantised models to get it to work on an 8GB VRAM GPU such as an RTX 4060 TI.

📂 ComfyUI/
├── 📂 models/
│   ├── 📂 checkpoints/
│   │   └── ltx-2.3-22b-dev_audio_vae.safetensors
│   ├── 📂 clip/
│   │   └── gemma_3_12B_it_fp4_mixed.safetensors
│   ├── 📂 latent_upscale_models/
│   │   └── ltx-2.3-spatial-upscaler-x2-1.1.safetensors
│   ├── 📂 loras/
│   │   └── ltx-2.3-22b-distilled-lora-384.safetensors
│   ├── 📂 text_encoders/
│   │   └── ltx-2.3-22b-dev_embeddings_connectors.safetensors
│   ├── 📂 unet/
│   │   └── ltx-2.3-22b-dev-Q4_K_M.gguf
│   └── 📂 vae/
│       └── ltx-2.3-22b-dev_video_vae.safetensors
Type Initial Image Additional Asset Workflow
T2VA
I2VA
FL2VA Last frame
I2VCA Download example 2 (man).mp3

LTX2.3 Video Dimensions

Width & height settings must be divisible by 32.

Frame count must be divisible by 8 + 1.

Landscape

832x480 ~(16/9)
960x544 ~(16/9)
1024x576 (16/9)
1280x720 (16/9)
1920x1056 ~(16/9)
1920x1088 ~(16/9)

Portrait

480x832 ~(9/16)
544x960 ~(9/16)
576x1024 (9/16)
720x1280 (9/16)
1056x1920 ~(16/9)
1088x1920 ~(16/9)

WGET Commands

If you are using Runpod, or a similar hosted GPU service, then you can access your running pod/instance using a terminal.

#
#
# CD into ./ComfyUI/models/checkpoints folder
wget -c https://huggingface.co/unsloth/LTX-2.3-GGUF/resolve/main/vae/ltx-2.3-22b-dev_audio_vae.safetensors

#
#
# CD into ./ComfyUI/models/clip folder
wget -c https://huggingface.co/Comfy-Org/ltx-2/resolve/main/split_files/text_encoders/gemma_3_12B_it_fp4_mixed.safetensors

#
#
# CD into ./ComfyUI/models/latent_upscale_models folder
wget -c https://huggingface.co/Lightricks/LTX-2.3/resolve/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors

#
#
# CD into ./ComfyUI/models/loras folder
wget -c https://huggingface.co/Lightricks/LTX-2.3/resolve/main/ltx-2.3-22b-distilled-lora-384.safetensors

#
#
# CD into ./ComfyUI/models/text_encoders folder
wget -c https://huggingface.co/unsloth/LTX-2.3-GGUF/resolve/main/text_encoders/ltx-2.3-22b-dev_embeddings_connectors.safetensors

#
#
# CD into ./ComfyUI/models/unet folder
wget -c https://huggingface.co/unsloth/LTX-2.3-GGUF/resolve/main/ltx-2.3-22b-dev-Q4_K_M.gguf

#
#
# CD into ./ComfyUI/models/vae folder
wget -c https://huggingface.co/unsloth/LTX-2.3-GGUF/resolve/main/vae/ltx-2.3-22b-dev_video_vae.safetensors

Wait for files to download fully before running your workflows.

https://huggingface.co/RuneXX/LTX-2.3-Workflows/tree/main