I saw a (highly reputable of course) tweet a few days back suggesting all of OpenRouter's DS4 traffic would fit on a single rack of modern Nvidia kit.

Hm, that’s doubtful. I think even one instance of DS 4.1 Flash alone at ~500B parameters needs a full node (8 GPUs).

4xh200 seem to be enough if you cpu offload the engrams (which is pretty typical and even expected).[1]

And these are quite old cards by now. But yeah "all of OpenRouters traffic" is gonna take more than a rack

https://recipes.vllm.ai/deepseek-ai/DeepSeek-V4.1-Flash?hard...

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