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Mixture of Experts: What Actually Happens When a Token Hits the Router

This story is from 2026-10-26. It is preserved in the archive; the latest stories are on the live feed.

Mixture of Experts: What Actually Happens When a Token Hits the Router You've seen the model names: Mixtral 8x7B , DeepSeek-V3 671B-A37B , Nemotron 3 Ultra 550B-A55B . The first number is total parameters. The second is active parameters. A 671B model that only "uses" 37B per token. Developers nod…

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  1. 2026-10-26 07:13 · DEV Community — Machine Learning
    Mixture of Experts: What Actually Happens When a Token Hits the Router

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