SD3 Workflow with SDXL refiner: v1.0: sd3WorkflowWithSDXL_v10.zip
SD 3 Standard Archive
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SD3 workflow to use SDXL as refiner
Edit: Recommend using this custom node
city96/SD-Latent-Interposer: A small neural network to provide interoperability between the latents generated by the different Stable Diffusion models. (github.com)