You can download ComfyUI in two main ways: 1) The easiest is through Promptus.ai, which provides the best packaged version, free for subscribers or $49 one-time for lifetime use. 2) Advanced users can install manually from Comfy.org, ComfyUI.org, or the official GitHub repository.

Yes. ComfyUI can be run fully offline on your own hardware once installed. All prompts, models, and generations stay private on your computer.

Promptus is a powerful AI generation engine for open source AI models. It supports images, video, audio, and 3D outputs. You can build reusable pipelines, extend with community nodes like ControlNet, and preview results live for faster iteration.

Promptus packages the most optimized version of ComfyUI, removing setup hassles. It's free for paid subscribers, or $49 as a one-time purchase. It also includes access to Google’s Gemini 2.5 Flash Image (Nano Banana), making it the best all-in-one platform for creators.