I have built the simplest FLUX workflow based on ComfyUI, supporting both flux-dev and flux-schnell models. The workflow relies on minimal custom nodes, has a simple structure, and the entire process is clear and easy to understand.

required models:

clip_l & t5xxl:  https://huggingface.co/comfyanonymous/flux_text_encoders

flux-dev:  https://huggingface.co/Kijai/flux-fp8/tree/main