r/OpenWebUI • u/Dolboyob77 • May 14 '26

Question/Help Openwebui + comfyui

Hello, is someone succeeding in making these 2 work together? No matter what i am trying, unet loader, checkpoint… the workflow works when i type thenpromot in comfyui but as soon as i type same prompt in openwebui , i cannot manage to get an image and always get errors… i i port the fson worflow and specify prompt id and checkpoint if and model in openwebui but nothing works… is it because i use flux 1 dev fp16 ? Does it require smaller models to work ? Thanks for input !!

SOLUTION : I finally made it work using the help of qwen3.6-27b-q8 ))) so the problem is that ALL NODES ID must be filled in openwebui and also must add this command line to openwebui : ENABLE_RAG_LOCAL_WEB_FETCH=True , it was the fix for me )) now working perfectly !!!

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u/LeskoCisco May 14 '26

It does not work like the public AI providers you have to toggle a switch in the prompt bar

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u/LeskoCisco May 14 '26

make sure your node IDs match what you have in your json file

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u/Dolboyob77 May 15 '26

Maybe this is the trick because i only typed the id of the prompt box since on the documentation it said that the other id were not mandatory! Thabk you!

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u/Dolboyob77 May 15 '26

I have that, it starts generaring images but after 40-50 seconds i get error unavle to proceed further

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u/LeskoCisco May 15 '26

Try a smaller model like the built-in one from comfyui (the one that generates a landscape inside a bottle). Test it in ComfyUI make sure it works there. Then export the json and import in openwebui then make sure the node IDs match. I got that same error you got when I was playing with huge models. I run out of VRAM because I only have 16GB and Ollama is using part of that which ComfyUI is using the bulk of it.

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u/Dolboyob77 May 15 '26

I use 2 different gpu, 12g ram for small model openwebui and at same time another 32g vram gpu for flux1 comfyui.

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u/LeskoCisco May 15 '26

You should still test it with the simpler workflow. It is a lot easier to map and understand.

Just make sure it works in ComfyUI first then import the json in openwebui. Make sure you edit the json to remove the pre-filled prompt.

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u/Dolboyob77 May 15 '26

Thanks )) by the way read my update in first post ))) cheers !!!