Running NovelAI V5 in ComfyUI: nai-diffusion-5-full works, and the Error fetching Anlas 400 is a moved endpoint
nai-diffusion-5-full and nai-diffusion-5-curated work as they are through the ComfyUI_NAIDGenerator node, even though the README says the IDs haven't been checked against the live API. The Error fetching Anlas 400 that shows up next to them has nothing to do with the models: the node still asks https://api.novelai.net/user/data for your balance, and NovelAI moved its user endpoints to…
The article discusses issues encountered when using the NovelAI V5 models in ComfyUI, specifically the Error fetching Anlas 400 error and the need to update the endpoint for the Anlas balance lookup. The author installed ComfyUI v0.35.0 and pinned the node to a specific commit, but the README still mentioned that the V5 model IDs had not been verified against the live API.
The issue was traced back to the node still asking for the old balance endpoint at https://api.novelai.net/user/data, while NovelAI had moved its endpoints to image.novelai.net. Swapping the host resolved the 400 error, but the response format from the new host needed further adjustment, as trainingStepsLeft was now returned as a dictionary rather than an integer.
The author provided instructions on how to fix this issue by modifying the nodes.py file to point to the new host and normalize the trainingStepsLeft value. After applying these changes, the Anlas Tracker showed the correct Anlas balance, and generating a V5 image cost 0 Anlas. The article also mentioned a potential regression issue with V4.5 and older models, but no further investigation was conducted on this matter.
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