# MoE Interpretability Papers Probe How Expert Routing Encodes Knowledge and Frequency

One arXiv study proposes expert-aware contrast decoding to cut hallucinations in mixture-of-experts models, while another argues routing follows a frequency-diversity law resembling a compression code.

- Published: 2026-07-25T05:43:03.754Z
- Canonical: https://polylog.news/ai/2026-07-25/moe-interpretability-papers-probe-how-expert-routing-encodes
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [arXiv (expert-aware contrast decoding)](https://arxiv.org/abs/2607.20426), [arXiv (MoE routing frequency-diversity)](https://arxiv.org/abs/2607.20427), [Google Research](https://research.google/research-areas/)

Two new arXiv preprints turn attention to the internals of mixture-of-experts (MoE) models, the architecture now standard in frontier systems including the largest Chinese open-weight releases. Both treat the router, the component that deci…

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