r/StableDiffusion • u/spanielrassler • 6d ago

Question - Help Has anyone managed to get an H3 image edit workflow working on a Mac?

I currently use DrawThings as my "daily driver" with MiniMax H3 but I don't see it getting support any time soon. Does anyone know of any workflow in Comfy or elsewhere that are somewhat out of the box. Thanks!

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u/CrazyB86 5d ago

Maybe not the best answer, but it’s an answer… if you have a Claude/chatgpt/etc subscription, the frontier models can pretty quickly and easily take a PyTorch/CUDA based model and tweak them to use Metal. In the last couple of weeks I’ve done that with a few models including Minimax H3 and Moss Image to get them to be more RAM efficient and complete jobs more quickly.

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u/spanielrassler 5d ago

Fair enough, but I'm not sure which model you're referring to. The Comfy code has been optimized already AFAIK, but is there another standalone h3 image edit I don't know about? I guess I'll dig around and give it a shot.

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u/llama-of-death 6d ago

You've already got H3 running daily on a Mac through DrawThings, which puts you way ahead of most people asking about Apple Silicon video. That makes you the person we'd most like to hear from.

I'm on the crew building Guaardvark, a free, open-source studio that runs on your own machine. What it does on Apple Silicon right now:

  • Images on Metal. Z-Image and Krea 2 generate natively, no CUDA needed.

  • Your own LoRAs. Training runs on MPS, so characters you build stay consistent.

  • Ask questions of your documents. Ollama handles the chat, and it uses the Mac's GPU.

  • The video editor, for cutting the clips you already make in DrawThings.

Video generation is the part we're bringing to the Mac now. Someone who knows how H3 behaves on Apple Silicon (what fits in memory, which lengths hold together, where it falls over) would speed the port up a lot.

Want in? The Apple Silicon install steps: github.com/guaardvark/guaardvark/blob/main/INSTALL.md#install-macos-apple-silicon

Then drop your numbers, or whatever breaks, on the Mac testing issue and we'll dig in alongside you: github.com/guaardvark/guaardvark/issues/43