
15s, 18s or 57s - The ComfyUI Edit Speed Ladder
The same edit three ways with a 4-step Lightning LoRA, Flux Kontext and full Qwen. What each trade-off actually costs.

The same edit three ways with a 4-step Lightning LoRA, Flux Kontext and full Qwen. What each trade-off actually costs.

One node takes three reference images. Person plus product, person plus scene, and the group shot - with measured timings.

One generation, seventeen outputs: the flat image, every object on transparency, and a free background plate.

We ran the same edit with and without a mask. The no-mask version won. Here’s when a mask helps and when it costs you.

Add canvas and let the model fill it. The node, the feathering, and the mistake that invents furniture.

The nine nodes behind every local instruction edit, what each does, and the one node that turns generating into editing.

Local instruction-based image editing: change an outfit, nudge a pose, or merge two references, while keeping face, scene, and identity intact. The Engine Room, machine two.