Qwen Image 2.1: Latent Upscaling to 4K in ComfyUI (Patreon)

Video : https://youtu.be/Q0GsBOIJotY

Hey everyone.

New video is up. This one is for anyone who wants big images without stacking upscaler models. We take Qwen Image 2.1 from 1 megapixel to 2K and then to 4K, using nothing but the model itself. A second pass of sampling in its image edit mode does the upscaling, and then one NVIDIA DLSS 5 pass at the end cleans up texture and lighting.

The thing that surprised me: the details stay. With other diffusion models, a second or third pass usually moves things around, the jacket changes, the beard changes, the expression changes. Here the character comes through untouched and the pixels just get sharper. Even at denoise 1.0.

We also make character sheets for video reference and push a realistic character into a cartoon world, all in the same workflow family.

The free upscaling workflow attached below. For Patreon Supporters, additional contents and updates in the supporter post.

— Benji