ltx-23-text-to-video-open-source-free-12gb-vram-supported

ComfyUI-Manager

GitHub Repository: ComfyUI-Manager

Open the directory ComfyUI\custom_nodes.

Open Git Bash within this directory and enter the command: git clone https://github.com/Comfy-Org/ComfyUI-Manager.git

Once executed, ComfyUI-Manager will be successfully downloaded into the folder.

Opening the Workflow

Click run_nvidia_gpu.bat again to launch the application.

Workflow File: ltx-23-all-in-one-20260507.json

Drag and drop the LTX2.3.json workflow file onto any blank area of ​​the web interface; the workflow will load automatically.

You will likely see a series of red error messages displayed within the workflow.

Click the button in the top-right corner. Management

Click within the red box.

Install Missing Nodes

Select all items, then click “Install.”

Once the installation is complete, close the terminal and restart the project.

Click run_nvidia_gpu.bat again to restart.

Download Models

Download the corresponding large models and place them in the appropriate folders.

/ComfyUI/models/diffusion_models

├── ltx-2-3-22b-dev-Q4_K_M.gguf

├── ltx-2.3-22b-dev_transformer_only_fp8_scaled.safetensors

/ComfyUI/models/text_encoders

├── gemma_3_12B_it_fp4_mixed.safetensors

├── ltx-2.3_text_projection_bf16.safetensors

/ComfyUI/models/latent_upscale_models

├── ltx-2.3-spatial-upscaler-x2-1.0.safetensors

/ComfyUI/models/vae

├── LTX23_audio_vae_bf16.safetensors

├── LTX23_video_vae_bf16.safetensors

└── taeltx2_3.safetensors

/ComfyUI/models/loras

├── ltx-2-19b-distilled-lora_resized_dynamic_fro09_avg_rank_175_fp8.safetensors

├── ltx-2-19b-ic-lora-canny-control.safetensors

├── ltx-2-19b-ic-lora-depth-control.safetensors

├── ltx-2-19b-ic-lora-detailer.safetensors

├── ltx-2-19b-ic-lora-pose-control.safetensors

├── ltx-2-19b-lora-camera-control-dolly-in.safetensors

├── ltx-2-19b-lora-camera-control-dolly-left.safetensors

├── ltx-2-19b-lora-camera-control-dolly-out.safetensors

├── ltx-2-19b-lora-camera-control-dolly-right.safetensors

├── ltx-2-19b-lora-camera-control-jib-down.safetensors

├── ltx-2-19b-lora-camera-control-jib-up.safetensors

├── ltx-2-19b-lora-camera-control-static.safetensors

├── ltx-2.3-22b-distilled-lora-dynamic_fro09_avg_rank_105_bf16.safetensors

├── ltx-2.3-22b-ic-lora-union-control-ref0.5.safetensors

├── ltx2.3-transition.safetensors

github： rola

Once the download is complete, it is also recommended that you restart the project.

Updating ComfyUI

If you still encounter errors or other issues after restarting:

We recommend trying to update ComfyUI to ensure that an outdated version does not cause further complications.

Click on update_comfyui located within the ComfyUI_windows_portable\update directory.

Wait for the update process to finish.

Click run_nvidia_gpu.bat again to restart the application.

Running LTX 2.3

Under normal circumstances, LTX 2.3 should now be fully operational.

Click “Run” in the top-right corner to begin generating a sample video.