When Does Latent Communication Pay? A Causal Audit of Relayed KV Caches in Multi-Agent LLMs

Jiaming Cheng, Subhransu Das, Rajiv Ramnath

Multi-agent LLM systems relay key--value caches instead of text and credit their gains to exchanged ``latent thoughts''. That credit is a claim about \emph{which} example's cache i…