ComfyUI disk usage: checkpoints, outputs and temp — what's safe

ComfyUI's appetite = models (5–24 GB each) + outputs (every generation saved) + temp frames.

Typical layout

DirContentSafe?
models/checkpoints/, models/loras/SD/SDXL/Flux weightsKeep what you use
output/every generation image/videoArchive or delete
temp/preview framesYes, always
input/uploaded sourcesYour call

Quick wins

du -sh ComfyUI/models/* ComfyUI/output | sort -h
find ComfyUI/temp -type f -delete
find ComfyUI/output -mtime +30 -name '*.png' -delete

FAQ

Workflows reference deleted models?
They'll error on load — move models you still use in workflows.