Flux.1 Kontext supporting text-to-image and multi-image-to-image generation. The 'pro' model costs only about RMB 0.14 (US$0.02) per image.
https://github.com/LKbaba/ComfyUI-TuZi-Flux-Kontext
git clone https://github.com/LKbaba/ComfyUI-TuZi-Flux-Kontext
comfy node install ComfyUI-TuZi-Flux-Kontext