MiniMax H3 for 16MP images and inpainting: Mac-ready ComfyUI workflows released free

DaLyon92x · reddit · 2026-09-24

A detailed local workflow for MiniMax H3 image generation and editing on a 48GB M5 MacBook Pro. Key takeaways: render at 4MP then 2x upscale with H3's latent upscaler rather than going straight to 16MP; ComfyUI mask-based inpainting with soft edge blending enabled a 5440x3072 canvas built in 43 non-degrading passes, each figure with its own reference. Good for 300dpi prints, busy scene building, and label/logo tests. Free Mac + CUDA workflows on Civitai.

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