ComfyUI Extension: comfy-switch-samplers

Authored by azazeal04

Created

Updated

3 stars

Switch sampler nodes for ComfyUI

Custom Nodes (0)

    README

    ComfyUI Switch Samplers Pack

    This custom node pack for ComfyUI introduces advanced sampler and scheduler switching strategies. It allows users to dynamically change samplers, schedulers, models, VAEs, CFG scales, denoise values, and conditioning between stages of a generation.

    The pack is designed for both same-family checkpoints (e.g. SDXL variants).

    ✨ Features

    • 4 Fully Working Sampler Nodes

      • Step Switch KSampler

        <img width="1424" height="904" alt="StepSwitchKSampler" src="https://github.com/user-attachments/assets/c779650e-a460-4d9b-b321-7d6e471e0649" />

      • MultiStep KSampler

        <img width="1492" height="1055" alt="MultiStepKSampler" src="https://github.com/user-attachments/assets/53a41831-e0fb-45ec-8c3f-5a7c36a08374" />

    • Upgraded Cross-Model Nodes

      • CrossStepSwitchKSampler → Two-stage sampler with optional second model/vae/text encoder. Perfect for workflows like SDXL → Flux.

        <img width="1637" height="1275" alt="CrossStepSwitchKSampler" src="https://github.com/user-attachments/assets/07e04b99-4d55-4536-8805-d826526b64e6" />

      • CrossMultiStepKSampler → Three-stage sampler with full control over models, VAEs, CFGs, denoise values, samplers, schedulers, and conditioning for each stage.

        <img width="1764" height="1686" alt="CrossMultiStepKSampler" src="https://github.com/user-attachments/assets/cf709a04-8796-4352-be3a-e5aa175f640c" />

    • Flexible Conditioning

      • Each stage can use its own positive and negative conditioning (from the correct text encoder for the model in that stage).

    • Latent Bridging

      • Automatically performs VAE decode → encode when switching between different model/vae pairs.
      • Ensures compatibility when mixing architectures.

    📦 Installation

    1. Clone or download this repository into your ComfyUI custom_nodes folder:

      cd ComfyUI/custom_nodes
git clone https://github.com/azazeal04/comfyui-switch-samplers.git

      Or manually place the folder inside ComfyUI/custom_nodes.

    2. Restart ComfyUI.

    3. The new nodes will appear under:

      • Azazeal / Switch Samplers (all original switching nodes)

             Or

    • Install from manager

      Search for comfyui-switch-samplers

    🛠️ Usage

    • Connect a Model, VAE, Conditioning (positive/negative), and Latent Image into one of the switch nodes.
    • Select samplers, schedulers, step counts, CFG values, and denoise levels per stage.
    • Outputs a new LATENT tensor for further processing or decoding.

    ⚡ Example Workflows

    • StepSwitchKSampler Run first 10 steps with Euler on SDXL, then switch to 10 steps with DPM++ 2M Karras for refinement.

    • MultiStepKSampler Run 3 consecutive sampler stages with different samplers, schedulers, and denoise values.

    • CrossStepSwitchKSampler Run SDXL for the first half, then seamlessly switch to Flux with its own VAE and text encoder for final refinement.

    • CrossMultiStepKSampler Run three different models in sequence, e.g.:

      1. SDXL for base composition
      2. Flux for style transfer
      3. Qwen for final polish

    🎁 Very Special

    A very special THANK YOU to Afroman4peace for testing the nodes with Flux, Qwen Image and Wan models enabling me to correct the errors, could not have done it without him. He has really great models, go check them out on CivitAI. Afoman4peace, again thank you very much for your help testing the nodes these past 2 days, I really could not have done it without your help.

    📖 Node Categories

    • Azazeal / Switch Samplers → Single-model switch strategies.

    📜 License

    This project is licensed under the MIT License. You are free to use, modify, and distribute it, with attribution.

    🙌 Credits

    • Built on top of ComfyUI.
    • Extended sampler logic inspired by community contributions.
    • Cross-model VAE bridging and conditioning handling by this custom pack.