I thought DeepSeek was closed-weights and proprietary? I wonder how it compares against Western open-weight models. The hugging face page contains the comparison only with proprietary models for some reason.

DeepSeek has always been open-weight, and the DeepSeek HuggingFace page does not contain any comparisons. Where did you form these opinions?

It contains comparisons: https://huggingface.co/deepseek-ai/DeepSeek-V4-Flash

Just the first one then...

Apologies. Where did I form my opinions?

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Nemotron would be a comparable Western open model AIUI.