Why ComfyUI is The BEST UI for Stable Diffusion!

Olivio Sarikas
11 Oct 202319:27

TLDRThis video extols the virtues of ComfyUI for Stable Diffusion, highlighting its resource efficiency, portability, and ease of installation. It showcases a simple workflow using custom nodes, emphasizing ComfyUI's adaptability and community-driven innovation. The video also details the process of installing custom nodes and suggests essential packs for enhancing the user experience. Viewers are introduced to model switching and the benefits of having the complete workflow saved within each image's metadata, encouraging artistic freedom and experimentation with AI.


  • 😀 ComfyUI is recommended for its resource efficiency, making it ideal for older computers.
  • 🔌 ComfyUI is portable and self-contained, which simplifies the installation process.
  • 🛠️ The workflow introduced in the video uses only three nodes for text-to-image rendering, upscaling, and image sharpening, which is easy to understand, especially for users familiar with Automatic1111.
  • 🔄 ComfyUI works well with both 1.5 models and refined SDXL models, showcasing its versatility.
  • 💡 One of ComfyUI's benefits is its use of custom nodes created by the community, allowing for a sandbox-like environment where users can tailor nodes to their needs.
  • 🌐 The community's active involvement ensures that ComfyUI quickly adapts to new AI technologies, often outpacing other UIs and their extensions.
  • 📥 ComfyUI offers a manager for easily installing, updating, disabling, and uninstalling custom nodes.
  • 🛠️ The video provides a step-by-step guide on installing the ComfyUI manager and essential custom node packs for enhancing the user's experience.
  • 🖼️ ComfyUI allows for model switching within the same workflow, enabling users to experiment with different models and styles without leaving the canvas.
  • 🔍 The metadata of each rendered image in ComfyUI saves the complete workflow, providing extensive notes and links to resources, which is a significant advantage over other UIs.
  • 🎨 ComfyUI offers artistic freedom and convenience, allowing users to customize their workflow and experiment with different builds in various tabs.
  • 📈 Despite an initial steep learning curve, ComfyUI's complexity is user-defined, and efficiency nodes simplify the process for those who prefer a streamlined approach.

Q & A

  • What is the main topic of the video?

    -The main topic of the video is to explain why ComfyUI is the best UI for Stable Diffusion and to provide reasons for its advantages.

  • Why is ComfyUI considered easy on resources?

    -ComfyUI is considered easy on resources because it is a lightweight solution that works well even on older computers.

  • How is ComfyUI described in terms of portability and installation?

    -ComfyUI is described as completely portable and self-contained, making it very easy to install.

  • What is the significance of the workflow built by the presenter?

    -The significance of the workflow is that it only uses three different nodes to create text-to-image rendering, upscale, and image sharpening, making it simple and easy to understand for users coming from Automatic1111.

  • Why does the presenter mention that ComfyUI works well with 1.5 models and SDXL models?

    -ComfyUI works well with 1.5 models and SDXL models because it is adaptable and can utilize the refiner baked into most community models, providing flexibility in usage.

  • What is the benefit of using custom nodes in ComfyUI?

    -The benefit of using custom nodes in ComfyUI is that they allow users to create nodes exactly as needed, and because the community is very active, new technology for AI is often adapted very quickly.

  • How can users install custom nodes in ComfyUI?

    -Users can install custom nodes in ComfyUI through the manager, where they can find a list of available nodes to install, update, disable, or uninstall.

  • What are some of the recommended packs to download for ComfyUI?

    -Some recommended packs to download for ComfyUI include the Comfy Impact Pack, Efficiency Notes, W Node Suit, and the Ultimate SD Upscaler.

  • How does the presenter describe the process of model switching in ComfyUI?

    -The presenter describes model switching as the ability to use different models simultaneously, allowing users to render images with different styles and then switch between them within the same workflow.

  • What is the advantage of having the complete workflow saved inside every image rendered in ComfyUI?

    -The advantage is that it allows users to save the complete process of whatever they are doing, including extensive notes, reasons for actions, and links to resources, making it easier to replicate or understand the process later.

  • How does the presenter address concerns about ComfyUI being too complex due to the number of cables?

    -The presenter acknowledges the steep learning curve but emphasizes that ComfyUI is only as complex as the user makes it, allowing for simple workflows and offering efficiency notes to simplify the process.

  • What is the presenter's advice for users who want to start with a simple workflow in ComfyUI?

    -The presenter advises users to start with a basic build that is easy to understand and then gradually explore more complex workflows as they become more comfortable with the UI.



🎨 Introduction to ComfyUI for AI Art

This paragraph introduces ComfyUI as an easy-to-use, resource-efficient, and portable tool for AI art creation. It highlights the benefits of using ComfyUI, especially for those with older computers, and explains the simplicity of installing and using custom nodes. The paragraph emphasizes the active community contributing to ComfyUI, making it a flexible and fast-adapting tool for AI art.


🌐 Custom Nodes and Community Contributions

This paragraph delves into the advantages of using custom nodes within ComfyUI. It explains how users can create and share custom nodes, which helps in quickly adopting new AI technologies. The process of installing and managing these nodes is detailed, showing how user-friendly the system is. The paragraph also compares ComfyUI's adaptability with other UIs like Automatic 1111, emphasizing ComfyUI's speed and ease of integration with new technologies.


📊 Workflow Examples and Model Switching

This section provides examples of different workflows in ComfyUI, demonstrating text-to-image rendering, image-to-image rendering, and model switching. It showcases the flexibility of running multiple workflows simultaneously in different tabs, enhancing efficiency and creativity. The paragraph explains model switching, where the same composition can be rendered in different styles or levels of realism by switching models mid-process.


🖌️ Artistic Freedom and Advanced Features

This paragraph discusses the artistic freedom ComfyUI offers by allowing users to customize their workflows extensively. It highlights the ability to add nodes anywhere in the process, providing control over the artistic outcome. The section addresses concerns about ComfyUI's complexity, reassuring users that simple workflows can be used effectively. It also mentions efficiency nodes that simplify the process by combining functionalities.

🔧 Building and Modifying Workflows

This section gives a step-by-step guide on how to add new nodes to a workflow in ComfyUI. It explains how to search for and select nodes, and how to connect them correctly. The paragraph provides details on configuring nodes, such as loading models, adjusting prompts, and setting resolutions. It also covers rendering settings and using the ultimate SD upscaler for high-resolution images.

⚙️ Upscaling and Sharpening Images

This paragraph focuses on the upscaling and sharpening processes in ComfyUI. It explains the settings for upscaling, including tile width and denoising values, and how these affect the final image quality. The section also describes how to bypass nodes if certain steps are not needed, optimizing GPU usage. Detailed explanations of the ultimate SD upscaler's settings are provided to help users achieve the best results.

🚀 Starting the Render Process

This section explains how to start the rendering process in ComfyUI. It details the functions available on the right side of the interface, such as the queue prompt for generating images and options for batch rendering. The paragraph also covers how to save and load workflows, and how to save images. It introduces a secondary build example with a second case sampler, showing how to load multiple models for complex workflows.

📚 Additional Resources and Community Support

The final paragraph encourages viewers to explore more complex workflows and additional features like ControlNet. It highlights the active community's support in sharing workflows and resources, and the benefits of learning from community contributions. The paragraph ends with a call to action, inviting viewers to leave comments for more detailed tutorials and thanking them for their support.




ComfyUI is a user interface designed for use with Stable Diffusion, a type of artificial intelligence model used for generating images from textual descriptions. In the video, ComfyUI is highlighted as the best UI for Stable Diffusion due to its ease of use, efficiency, and the ability to create custom nodes. It is positioned as a more resource-friendly and portable alternative to other UIs, making it accessible for users with older computers and providing a streamlined installation process.


The term 'resource-friendly' refers to software or systems that are designed to use fewer computational resources, such as memory and processing power. In the context of the video, ComfyUI is described as being more easy on resources, making it an ideal solution for users with older computers that may not be able to handle more demanding UIs for Stable Diffusion.

💡Portable and self-contained

When software is described as 'portable and self-contained,' it means that it can be easily transferred and used on different computers without the need for complex installation processes or dependencies. The video emphasizes that ComfyUI is very easy to install, highlighting its portability as a key benefit for users who want a hassle-free setup.

💡Custom nodes

Custom nodes are user-created components within a UI that allow for specific functionalities to be added or modified. In the video, it is mentioned that ComfyUI functions like an open sandbox, where anyone, including the viewer, can create custom nodes. This feature is one of the benefits of ComfyUI, as it allows for personalization and quick adaptation to new AI technologies.


The 'community' in the context of the video refers to the group of users and developers who actively participate in creating and sharing custom nodes for ComfyUI. The video script mentions that the community is very active, which leads to rapid adaptation of new technologies and a wealth of shared resources, such as workflows and custom nodes.


A 'workflow' in this context refers to a sequence of steps or processes used to complete a task within a UI. The video introduces a simple workflow built with only three different nodes for text-to-image rendering, upscaling, and image sharpening. Workflows are crucial for understanding how to use ComfyUI effectively and are shared by the community to help new users.

💡Model switching

Model switching is a feature that allows users to use different AI models within the same workflow or rendering process. The video demonstrates how ComfyUI enables the use of different models, such as 'ref animated' and 'epic realism,' within the same workflow, providing flexibility and creative control over the image generation process.


Upscaling in the context of image processing refers to the increase in the resolution of an image while maintaining or improving its quality. The video mentions an 'ultimate SD upscaler' custom node that can upscale images while tiling them, which is efficient and works well even with slower GPUs.

💡Artistic freedom

Artistic freedom in the video refers to the ability of users to customize their workflow and creative process within ComfyUI. Unlike other UIs that may have a fixed structure, ComfyUI allows users to change the order of operations, add or remove steps, and experiment with different builds, providing full control over the artistic output.


The term 'complexity' in the video is used to describe the potential difficulty in understanding and using ComfyUI due to its customizable nature and the presence of many cables or connections between nodes. However, it is also mentioned that ComfyUI is only as complex as the user makes it, with the option to use simple workflows for those who prefer not to delve into the more advanced features.


ComfyUI is recommended for its resource efficiency, making it ideal for older computers.

ComfyUI is completely portable and self-contained, with an easy installation process.

A simple workflow using only three nodes for text-to-image rendering, upscaling, and sharpening is introduced.

ComfyUI's compatibility with both 1.5 models and refined sdxl models is highlighted.

Custom nodes created by the community are a significant advantage of ComfyUI, allowing for personalized and up-to-date AI technology integration.

The ComfyUI manager makes installing custom nodes straightforward, providing a list of available nodes for easy installation and management.

ComfyUI's active community contributes to rapid adaptation of new technology, outpacing other UIs.

ComfyUI allows for multiple workflows to run simultaneously in different browser tabs, enhancing productivity.

Model switching within ComfyUI enables the use of different models in a single workflow, offering versatility in image generation.

The entire workflow is saved within the metadata of each rendered image, preserving the complete process.

ComfyUI's community is very active in sharing workflows and offering support, exemplified by akat Suzi's contributions.

Artistic freedom in ComfyUI is emphasized, allowing users to customize and control the workflow to suit their needs.

ComfyUI's UI can be as simple or complex as the user desires, with the ability to add or modify nodes as needed.

The learning curve for ComfyUI may be steep, but it offers a personalized workflow that becomes easier with use.

Efficiency nodes in ComfyUI combine multiple functionalities, simplifying the workflow for users.

ComfyUI's rendering process is explained, detailing how to add nodes and customize settings for image generation.

The video concludes with an invitation for viewers to request more complex workflows, including control net and other advanced features.