ComfyUI

What it does

ComfyUI treats image generation as a graph. Loaders, samplers, ControlNet stacks and upscalers are nodes you wire together, and the workflow is a file you can version, share and replay byte for byte. Nothing sits behind a preset you cannot inspect.

It expects a GPU and a willingness to read. In exchange you get exact control over seeds, batch logic and multi-pass refinement — the reason studios use it for product shots that must match a reference frame.

Standout features

• Workflows saved as portable JSON
• ControlNet, LoRA and IP-Adapter stacks
• Runs on your own GPU, no per-image billing
• API mode for batch jobs

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