ComfyUI  >  Nodes  >  Latent-Interposer

ComfyUI Extension: Latent-Interposer

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city96 (Account age: 506 days)
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How to Install Latent-Interposer

Install this extension via the ComfyUI Manager by searching for  Latent-Interposer
  • 1. Click the Manager button in the main menu
  • 2. Select Custom Nodes Manager button
  • 3. Enter Latent-Interposer in the search bar
After installation, click the  Restart button to restart ComfyUI. Then, manually refresh your browser to clear the cache and access the updated list of nodes.

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Latent-Interposer Description

Latent-Interposer is a custom node for ComfyUI that enables direct conversion of latents between SDXL and SD v1.5, bypassing the VAE decoding/encoding process.

Latent-Interposer Introduction

SD-Latent-Interposer is an innovative extension designed to bridge the gap between different versions of Stable Diffusion models. This small neural network allows you to pass latents generated by one model (e.g., SDXL) directly into another model (e.g., SDv1.5) without the need for decoding and re-encoding them using a Variational Autoencoder (VAE). This can significantly streamline your workflow and improve the efficiency of your AI art generation process.

Key Benefits:

  • Interoperability: Seamlessly transfer latents between different Stable Diffusion models.
  • Efficiency: Eliminate the need for VAE decoding and re-encoding, saving time and computational resources.
  • Quality: Maintain the composition and quality of your images by minimizing artifacts.

How Latent-Interposer Works

At its core, SD-Latent-Interposer functions as a translator between the latent spaces of different Stable Diffusion models. Imagine you have two people speaking different languages. Normally, you would need a translator to convert one language to another and then back again. SD-Latent-Interposer acts as a direct translator, allowing these two people to understand each other without the intermediate steps.

Basic Principles:

  1. Latent Space: In AI art generation, a latent space is a compressed representation of an image. Different models have different latent spaces.
  2. Interposer Network: This network translates latents from one model's space to another, ensuring compatibility.
  3. Denoising: Adjust the denoise settings to hide any artifacts while preserving the image's composition. By placing SD-Latent-Interposer where you would normally use a VAE decode followed by a VAE encode, you can directly transfer latents between models, making your workflow more efficient and straightforward.

Latent-Interposer Features

SD-Latent-Interposer comes with several features designed to enhance your AI art generation experience:


  • Direct Latent Transfer: Move latents between different Stable Diffusion models without intermediate steps.
  • Denoising Control: Adjust the denoise settings to manage artifacts and maintain image quality.


  • Local Models: If you prefer to work offline or have a flaky internet connection, you can store models locally. The extension will prioritize local files over those on the Hugging Face hub.
  • Model Weights: Access and use different model weights to see how they affect your results.

Supported Models

  • Stable Diffusion v1.x
  • SDXL
  • Stable Diffusion 3
  • Stable Cascade (Stage A/B)

Latent-Interposer Models

SD-Latent-Interposer supports various models, each designed for specific tasks and compatibility:

| From | to v1 | to xl | to v3 | to ca | |:----:|:-------:|:-------:|:-------:|:-------:| | v1 | - | v4.0 | v4.0 | No | | xl | v4.0 | - | v4.0 | No | | v3 | v4.0 | v4.0 | - | No | | ca | v4.0 | v4.0 | v4.0 |

  • |

When to Use Each Model:

  • v1 to xl: Use when you need to transfer latents from Stable Diffusion v1.x to SDXL.
  • xl to v1: Use when transferring latents from SDXL to Stable Diffusion v1.x.
  • v3 to v1/xl: Use for compatibility between Stable Diffusion 3 and other models.

Troubleshooting Latent-Interposer

Here are some common issues you might encounter while using SD-Latent-Interposer and how to solve them:

Common Issues and Solutions

  1. Artifacts in Images:
  • Solution: Adjust the denoise settings to minimize artifacts while preserving the image's composition.
  1. Model Not Loading:
  • Solution: Ensure that the model files are correctly placed in the ComfyUI/custom_nodes/SD-Latent-Interposer/models folder. If you are using local models, make sure the path is correct.
  1. Slow Performance:
  • Solution: Check your system's resources. Running on a GPU can significantly improve performance.

Frequently Asked Questions

  • Q: Can I use SD-Latent-Interposer offline?
  • A: Yes, you can store models locally and the extension will prioritize these over online versions.
  • Q: How do I adjust the denoise settings?
  • A: You can adjust the denoise settings within the extension's interface to manage artifacts.

Learn More about Latent-Interposer

For additional resources and support, consider the following:

  • : Access model weights and other resources.
  • Community Forums: Join AI art communities to ask questions and share your experiences.
  • Tutorials and Documentation: Look for tutorials and detailed documentation to get the most out of SD-Latent-Interposer. By leveraging these resources, you can enhance your understanding and usage of SD-Latent-Interposer, making your AI art generation process more efficient and enjoyable.

Latent-Interposer Related Nodes


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