NEW BEST AI MODEL! How to use Flux.

Sebastian Kamph
9 Aug 202410:20

TLDRDiscover how to set up and utilize the Flux AI model for advanced image generation with Comfy UI. This tutorial guides you through downloading essential models, configuring your workflow, and experimenting with Flux's realism capabilities. Learn to achieve stunning results like a Viking woman or a whimsical prompt featuring a 'Ninja Chicken', showcasing Flux's impressive prompt understanding and detail rendering. Whether you opt for the Schnell or Dev model, this guide ensures you're equipped to harness Flux's potential on your local machine.

Takeaways

  • 😀 Flux is a new AI model that offers improved prompt understanding and detail compared to its predecessors.
  • 🔧 The video provides a guide on setting up Flux for local use, aiming to achieve a comfortable workflow.
  • 📚 To begin, download necessary models such as text encoder models, the 'vae' model, and the Flux model itself from Hugging Face.
  • 💾 Depending on your system's specifications, choose between FP16 and FP8 model versions for optimal performance.
  • 📁 Place downloaded models in specific folders within Comfy UI, like 'clip' for CLIP models and 'vae' for the VAE model.
  • 🖼️ Flux comes in two variants: 'Schnell' for systems with 8-12 GB VRAM and 'Dev' for systems with more powerful specs.
  • 🔄 For a more realistic output, integrate the 'Laura' model, which can be downloaded and placed in the 'lowas' folder.
  • 🛠️ Customize the workflow by adjusting settings such as the number of steps and the 'flux guidance node' for better results.
  • 🔍 The video demonstrates how to integrate Flux with the Comfy UI, addressing potential issues like red errors and model selection.
  • 🎨 The script showcases the capability of Flux to generate detailed and realistic images, as seen in the 'Viking woman' and 'Ninja Chicken' examples.
  • 📝 The video also highlights the importance of testing different settings and the potential for Flux to produce high-quality results with the right configuration.

Q & A

  • What is Flux, and how does it compare to MidJourney?

    -Flux is a new AI model that offers better prompt understanding and detail generation than MidJourney. It can create more realistic images, including realistic hands, which MidJourney struggles with.

  • What are the hardware requirements for running Flux?

    -Flux can run on different hardware depending on the version. For high-spec machines with over 32 GB of RAM and a GPU with 16 GB or more, you should use the FP16 model. For lower-spec machines with 8 to 12 GB VRAM, the FP8 model is recommended.

  • What steps are involved in setting up Flux in Comfy UI?

    -To set up Flux, you need to download the necessary models, including text encoder models, the VAE model, and the Flux model itself. These files are placed in specific folders within Comfy UI, such as the 'models/clip' and 'models/vae' folders.

  • What is the difference between the Schnell and Dev versions of Flux?

    -The Schnell version is optimized for lower-end GPUs with 8 to 12 GB VRAM, while the Dev version is designed for higher-end GPUs. The Dev version generally requires more hardware and takes longer to generate images.

  • How do you handle errors when loading a workflow in Comfy UI?

    -If you encounter red errors when loading a workflow, you should ensure that the models are correctly named and placed in the appropriate folders. You may need to update Comfy UI and its custom nodes to the latest version.

  • What is the Flux Realism Lora, and how do you use it?

    -The Flux Realism Lora is a model that enhances the realism of images generated with Flux. You can download it and place it in the 'models/lora' folder of Comfy UI, then load it into your workflow for more realistic image generation.

  • How do different Flux guidance node settings affect the image generation?

    -The Flux guidance node is similar to CFG and allows you to adjust the realism of the generated images. Higher values, such as 3.5 to 4.5, generally yield better results, while lower values may not be as effective.

  • What should you do if you encounter memory issues while using Flux?

    -If you experience memory issues, you can switch to using the FP8 model, which is less demanding on hardware. You can also try changing the weight type in the settings to accommodate lower-spec systems.

  • How can you test different models and settings in Comfy UI?

    -You can test different models by downloading various versions of Flux (such as Schnell or Dev) and placing them in the 'models/unet' folder. You can then load these models into your workflow and adjust settings like the guidance node to see how they affect the output.

  • What is the general process for generating an image using Flux in Comfy UI?

    -To generate an image, you load the necessary models and workflows into Comfy UI, adjust settings like the prompt and guidance node, and then run the workflow. You can tweak these settings and models to achieve the desired output.

Outlines

00:00

🚀 Setting Up Flux for Local AI Art Generation

This paragraph introduces the Flux model, an advanced AI for generating art locally with superior prompt understanding and detail compared to previous models. The speaker guides viewers through downloading necessary components, including text encoder models, the VE model, and the Flux model itself. Different versions of the Flux model are discussed based on hardware capabilities, with specific file types (fp16 for high-spec machines and fp8 for lower-spec machines) recommended for download from Hugging Face. The process involves placing these files in the correct folders within Comfy UI, a user interface for AI art generation. The paragraph concludes with instructions on setting up a workflow in Comfy UI and troubleshooting common errors.

05:00

🎨 Exploring Flux Model Variants and Realism Enhancements

The second paragraph delves into the practical use of the Flux model, discussing the hardware requirements and generation settings. It mentions the Flux guidance node, a feature that can influence the realism of the generated images. The speaker shares their findings on the effectiveness of different guidance values and suggests experimenting with these settings for optimal results. The paragraph also covers how to adjust the workflow for different Flux model variants, such as the 'Schnell' and 'Dev' versions, and addresses potential memory issues by suggesting the use of FP8 weight types. Additionally, the integration of a 'Laura' realism feature is explained, demonstrating how to set up and use it to enhance the generated images with more realistic elements. The speaker showcases an example of a complex prompt, 'The Crazy Adventure of the Ninja Chicken,' and the resulting images generated by Flux, highlighting the model's ability to handle intricate and detailed prompts.

10:03

📚 Conclusion and Encouragement for Further Exploration

In the final paragraph, the speaker wraps up the tutorial by summarizing the process of setting up and using Flux with Comfy UI. They express hope that the information provided is helpful and encourage viewers to continue experimenting with the tool to achieve the best results. The speaker also hints at the potential for further improvement by suggesting that with more iterations, even better outcomes can be achieved, emphasizing the dynamic and evolving nature of AI art generation.

Mindmap

Keywords

💡Flux

Flux refers to a new AI model mentioned in the video, which is described as superior to its predecessor, 'mid-journey.' It is highlighted for its improved prompt understanding, detail rendering, and capability for 'real hands,' suggesting advanced image generation capabilities. The video's main theme revolves around setting up and utilizing Flux, making it a central concept.

💡Comfy UI

Comfy UI is a user interface mentioned in the script for managing AI models, specifically for downloading and organizing necessary components for Flux. It is integral to the setup process described in the video, indicating its importance in the workflow for Flux's operation.

💡Text Encoder Models

Text encoder models are a type of AI model used in the Flux setup process. They are responsible for encoding text into a format that the AI can understand and generate images from. The script instructs viewers to download these models from Hugging Face, emphasizing their necessity for the Flux model to function.

💡VAE (Variational Autoencoder)

VAE, or Variational Autoencoder, is a model mentioned for its role in the Flux setup. It is used for generating new, unseen data from a probability distribution, in this case, likely for image generation. The script specifies downloading a VAE model file, indicating its function in the Flux workflow.

💡Hugging Face

Hugging Face is a platform where AI models and related files can be downloaded. The video script directs viewers to this platform to obtain the necessary models for Flux, such as the text encoder models and VAE, underscoring its role as a resource in the setup process.

💡FP16 and FP8

FP16 and FP8 refer to different precision formats for AI models, with FP16 being a higher precision and FP8 a lower one. The script suggests downloading the appropriate model based on the viewer's hardware specifications, indicating the importance of matching model precision with available computational resources.

💡Schnell and Dev

Schnell and Dev are two versions of the Flux model, with different system requirements and performance characteristics. The script provides guidance on which version to choose based on the viewer's GPU VRAM, showing that these terms are key in selecting the appropriate Flux model for one's setup.

💡Laura

Laura is a realism model mentioned in the script, which is used to enhance the realism of the images generated by Flux. The video describes downloading and integrating Laura into the Flux workflow, demonstrating its role in achieving more realistic image outcomes.

💡Workflow

A workflow in the context of the video refers to the sequence of steps and configurations required to operate the Flux model within Comfy UI. The script provides examples of workflows for different Flux model versions, illustrating the process of setting up and running the AI model.

💡Flux Guidance Node

The Flux Guidance Node is a feature within the Flux model that is similar to CFG (Control Flow Graph) but distinct. The script suggests experimenting with its value to achieve more realistic results, indicating its function in fine-tuning the image generation process.

💡Chat GPT

Chat GPT is mentioned in the context of creating a complex prompt for image generation using Flux. The script describes a scenario where Chat GPT assists in crafting a detailed prompt, demonstrating its utility in generating comprehensive input for AI models.

Highlights

Introduction of Flux, a new AI model with better prompt understanding and detail than its predecessors.

Flux is described as the model that should have been for SD3, offering improved capabilities.

The goal is to set up a comfortable workflow for using Flux, as demonstrated with a Viking woman image.

Introduction of a new feature, Flux Realism Laura, which is different from previous versions.

Flux is considered the best local model currently available.

Instructions on downloading necessary models from Hugging Face for Flux setup.

Differentiating between models for high and low specification machines.

Explanation on where to place downloaded models in the Comfy UI directory structure.

Downloading the Flux model, with options for different VRAM capacities.

The availability of an FP8 model for systems with memory issues.

Instructions on downloading and setting up Laura for realism in Flux.

Demonstration of how to integrate downloaded models into the Comfy UI workflow.

Troubleshooting tips for resolving red errors in the workflow.

Introduction of a new Flux guidance node for fine-tuning image generation.

Testing different settings to find what works best for Flux image generation.

A showcase of Flux's prompt understanding with a complex 'Ninja Chicken' example.

The ability to generate multiple images from a single complex prompt.

The potential for Flux to produce high-quality images even with difficult prompts.

Final thoughts on setting up Flux and the potential for further customization and experimentation.