# The Layer Mystery of VLA: An Information-Theoretical Analysis of VLA Latent Interface

**Published:** September 30, 2026
**Author:** Yuxiang Liu, Lizhi Yang, Fengze Xie, Aaron Ames, Yisong Yue
**Source:** arXiv — cs.AI
**Language:** en-US
**HTML:** https://aiqazaqstan.com/en/articles/the-layer-mystery-of-vla-an-information-theoretical-analysis-of-vla-late

arXiv:2609.36118v1 Announce Type: new Abstract: Vision-language-action (VLA) policies connect a pretrained vision-language backbone to an action head through a latent interface, but which backbone layers this interface should expose remains unclear. We study single-layer…

> From the original source: **arXiv — cs.AI**
> [Read full article at arXiv — cs.AI](https://arxiv.org/abs/2609.36118)

**Tags:** #arXiv #OpenAI Robotics

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