Author

Ren-Xiang Wang

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Preprint Aug 2026

Beyond Tier Labels: Role- and Deployment-Dependent Model Substitution in Multi-Call LLM Workflows

Large multi-call LLM systems pose a scientific problem that query-level routing does not capture: the value of a model depends on where it enters a dependent computation and on the deployment that surrounds that call. Existing routers typically decide \emph{where} to spend a stronger model while treating the benefit of...

Ren-Xiang Wang, Jia-Ming Cui · 0 citations

#artificial intelligence Preprint Sep 2026

CoSec: Benchmarking Agent Security in Communities

LLM agents operate in persistent collaborative environments involving multiple users, communities, memories, files, and tools. Community boundaries may remain fixed or evolve with changes in membership, roles, composition, and relationships. Agents must complete legitimate tasks and prevent unauthorized disclosure of p...

Hao Chen, Wen-Hui Dong, Ye Chen et al. · 0 citations