LTX2.3 ComfyUI

Here is one workflow:

- ltx2.3-it2v-gguf.json

use gguf and split models.

Reference output:

RTX4070 16GB vRAM + 32G RAM i2v(10Eros_v1.4; 15*24*768*960): Prompt executed in 441.41 seconds

RTX5080 laptop 16G vRAM + 64G RAM i2v(10Eros_v1.4; 15*24*768*960): Prompt executed in 338.79 seconds

Requirements:

Models:

- 10Eros_v1.4-Q5_K_M.gguf (GGUF), Put in: ComfyUI\models\unet

https://huggingface.co/vantagewithai/LTX2.3-10Eros-1.4-GGUF/resolve/main/10Eros_v1.4-Q5_K_M.gguf

- ltx-2.3-22b-distilled-lora-1.1_fro90_ceil72_condsafe.safetensors (distill lora) Put in: ComfyUI\models\lora\LTX

https://huggingface.co/SulphurAI/Sulphur-2-base/resolve/main/distill_loras/ltx-2.3-22b-distilled-lora-1.1_fro90_ceil72_condsafe.safetensors

- ltx-2.3-spatial-upscaler-x2-1.1.safetensors (latent upscale) Put in: ComfyUI\models\latent_upscale_models

https://huggingface.co/Lightricks/LTX-2.3/resolve/main/ltx-2.3-spatial-upscaler-x2-1.1.safetensors

- gemma-3-12b-it-heretic-v2_fp8_e4m3fn.safetensors (CLIP) Put in: ComfyUI\models\text_encoders

https://huggingface.co/DreamFast/gemma-3-12b-it-heretic-v2/resolve/main/comfyui/gemma-3-12b-it-heretic-v2_fp8_e4m3fn.safetensors

- ltx-2.3_text_projection_bf16.safetensors (Split file.)

https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/text_encoders/ltx-2.3_text_projection_bf16.safetensors

- Split VAE files (VAE) Put in: ComfyUI\models\vae\ltx

- LTX23_video_vae_bf16.safetensors

https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/LTX23_video_vae_bf16.safetensors

- LTX23_audio_vae_bf16.safetensors

https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/LTX23_audio_vae_bf16.safetensors

- taeltx2_3.safetensors

https://huggingface.co/Kijai/LTX2.3_comfy/resolve/main/vae/taeltx2_3.safetensors

ComfyUI Nodes:

- rgthree-comfy

- ComfyUI-KJNodes

- ComfyUI-VideoHelperSuite

- ComfyUI-GGUF