comfyui-workflows/models/ltx/ltx23-i2v-t2v-simple-single-pass

LTX 2.3 I2V/T2V Simple Single Pass

Summary

Community LTX 2.3 single-pass workflow supporting both image-to-video and text-to-video. Chosen as a lower-complexity starting point for tighter VRAM situations.

Model Family

• ltx

Status

• imported-only

Source

• Workflow pack page: https://huggingface.co/RuneXX/LTX-2.3-Workflows
• Workflow file: https://huggingface.co/RuneXX/LTX-2.3-Workflows/resolve/main/LTX-2.3_-_I2V_T2V_Simple_single_pass.json?download=true
• Supporting split-model page: https://huggingface.co/Kijai/LTX2.3_comfy
• Original publisher: RuneXX
• Date imported: 2026-08-08

Developer notes

• RuneXX says the workflows are based on extracted models from Kijai/LTX2.3_comfy.
• The repo explicitly says the extracted models may run easier on your computer as separate files.
• The README also recommends keeping ComfyUI-KJNodes, ComfyUI-GGUF, and ComfyUI itself fully up to date.

Our notes

• This is one of the better 3070 candidates in the LTX set because it aims for a simpler single-pass route rather than the larger story/multi-scene graphs.
• Still not truly light, but it is more realistic than the giant movie-maker style workflows.
• Good first LTX import when you want to see whether the family is practical at all on your box.

Required custom nodes

• ComfyUI-KJNodes
• rgthree-comfy
• easy use / easy showAnything
• optional ComfyUI-GGUF support is present in the graph, though not required if you stay on standard loaders

Notes

• Best LTX first try for low-complexity local testing.
• If this feels too heavy, the next thing to optimize is usually preview/decode choices and model-loading path.