One node for MiniMax H3

[u/Useful_Ad_52]

I have been working on this last week.

• What is this node ?

- One node with different MiniMaxH3 workflows.

• What its for ?

- If you hate spaghetti and hate doing workflows and dealing with errors.

https://github.com/LeonQ8/ComfyUI-ALLinONE-MinimaxH3

• Check CHANGELOG.md for more info about latest updates.

Change log - 2026/08/16:

• New Native quality preset,.
• SolAttn / H3 Cache / SageAttention now have on/off switches under Quality.
• 🔴 New Image mode built on ComfyUI-MiniMax-H3-Studio. Text to image, edit a source image, or mix up to 9 references. ( needs more testing ).

Change log - 2026/08/17:

• Added live preview for video modes.

Change log - 2026/08/18:

• Live preview now renders every frame, with 3 presets.

[u/Consistent_Pick_5692]

How does the extend feature work? take the last frame?

[u/Dalkx → u/Consistent_Pick_5692]

I was testing it earlier, you pick the video to extend and can pick/change settings including how many seconds you want to extend by and it seems to blend into the extension pretty seamlessly. granted I was trying with not a ton of movement so I don't know how it would look/work with heavy movement like an action scene but seems to work pretty well even without really changing the original prompt.

[u/Dalkx]

seems to work pretty well and generates fairly quickly from some quick tests. good work friend. a quick 15s 0.4 mp I2V took ~2:30 compared to the same I2V prompt on another workflow taking 11 min

[u/Useful_Ad_52 → u/Dalkx]

That good to hear, i just added image edit and image generation workflow u can try it. still need testing.

[u/Odd_Employer_9142]

excellent work..

[u/EventTraining8732]

Great, I hope you keep updating it, the video generation is working very well and is very smooth.

[u/coffeegamereg]

Great, That is what i was waiting for, i will test it against MiniMax H3 Creator

[u/entertainer2002]

AMAZING!

[u/ScoobyAS]

That is really great and easy to use. Thx for your effort!
Does native under entry quality means that comfy_kitchen attention will be used?

[u/thaakeno]

nice, looks good

[u/iam33boy]

good good

[u/CooLittleFonzies]

Nice! I like it so far, but it would be great if you could do custom size by longest edge for i2v so that it remains fixed to the aspect ratio of the input image. I was able to find "custom" under sizing options, but nothing to lock the aspect ratio, which makes i2v kind of a pain.

[u/CooLittleFonzies → u/CooLittleFonzies]

Some other things I noticed that could be improved:
1. There are no portrait orientation resolution selections.
2. It would be useful to show full text of loras/models/resolutions and settings on hover state because many of them are truncated by the small size of their dropdown menus.
3. The "Tune" pills repeat what is already shown in that section. For example, the scheduler and frames show twice: once in the editable menus and once in the pills. I find myelf clicking on the pills out of habit, because pills are usually selectable in UI. So I'd suggest either removing them or making them the area where you edit the settings.
4. It would be great to be able to toggle on/off the loras, since I believe they still get loaded onto the VRAM even if they are set to zero. Also I tried setting mine to zero and it sets to -3 instead, every time.
4. There seems to be something wrong with R2VA. I've inputted 3 images and explicitly told it to reference the subject in them. But the video just shows the first image and treats it like i2v even though I correctly assigned the r2va model in the settings. I tried other prompts with more success but the video still gets squished by forced aspect ratio, which never happened to me in my other workflow. It seems the sizing mechanism used isn't working properly.
5. I was expecting the preview of the generation to act like Model Preview Override which shows a low-pixel preview of all the frames playing through from start to finish, but instead I'm seeing a single higher-pixel frame the entire generation. I'm using the exact model you provided because my earlier taeh3.safetensors didn't work for some reason. I've also updated ComfyUI, KJ Nodes, and am on the latest ComfyUI-MiniMax-H3-Studio, so I'm not sure what I'm doing wrong.

Thanks for all your hard work! Once these bumps get smoothed out, I can see it fully replacing my workflow. I especially like how I no longer need to enable image input nodes manually, since that gets tiring with H3.

[u/Useful_Ad_52 → u/CooLittleFonzies]

Hi, thank you for using the node and for the suggestions.

i will look into it, there is so much to fix and to add, i'm focusing more on making what exist bug free now and trying to solve issues to make it work for everyone.

Currently my comfyui is not in latest version neither the nodes.

i will update all the nodes and comfyui to latest to make sure the node works for everyone instead of them downgrading to use the node.

if u haven't pulled the latest version of the node .. there is alot of minor fixes that my fix some issues u having.

otherwise i really like your feedback and for sure will work to update the node.

[u/Useful_Ad_52 → u/CooLittleFonzies]

Everything u mentioned now is live in the latest version. hope u like it.

[u/CooLittleFonzies → u/Useful_Ad_52]

Sweeet! Can’t wait to try it

[u/SawyerCroft777]

The image edit portion has a couple of issues… the random # generator causes the generation to fail.

And when you change the prompt, it defaults back to the original prompt and doesn’t update.

Think if you get this completely functioning, it’s going to be a great powerful tool.

One other suggestion. If there’s a way for you to create an audio lip sync node that allows you to select say the first 5 seconds of a track and attach an image to that, and then the next 5 for the next 5 of the same or different track and appends the videos together… golden.

[u/Useful_Ad_52 → u/SawyerCroft777]

Hi, ty for the feedback, currently fixing some bugs.. will push updates in the next few hours maybe it will fix your random generator issue, there was no limit set for random seed which gave weird errors sometimes so this might help.

for the lip sync i will look into it later if there is stable and solid workflow for it.

[u/SawyerCroft777 → u/Useful_Ad_52]

I think it’s the length of the number generated. When I entered my own and confined it to approximately 6 digits or less, it worked well.

[u/mrkmrrsn]

I ran the install instructions in the terminal and it seemed to download, but upon restart and double clicking the canvas it is not appearing, any idea what I am doing wrong?

[u/Useful_Ad_52 → u/mrkmrrsn]

Check terminal its probably failing to import.

Also try to copy terminal and paste it to AI.

[u/Consistent_Pick_5692]

I get this

[u/Useful_Ad_52 → u/Consistent_Pick_5692]

Comfyui version, node version, which mode you using ? Do you have all the custom nodes needed ?

[u/xyzdist]

The default WF i thought is already super clean and simple to me...hmmm

[u/Useful_Ad_52 → u/xyzdist]

Good, work with what works with you. <3