Chinese Researchers Open-Source Cache-to-Cache: LLMs Talk Without Tokens, +14.2% Accuracy

Scobleizer · x · 2026-09-18

Chinese researchers open-sourced Cache-to-Cache (C2C), a paradigm letting LLMs communicate without generating a single word. Today, multi-agent systems must translate internal "thoughts" into text tokens, losing semantic richness and adding token-by-token latency. C2C instead uses a neural network to directly project and fuse the source model's KV-cache into the target model — pure semantic communication — with a learnable gating mechanism to pick which layers benefit most from cache transfer. Results: zero intermediate text-generation latency and accuracy gains of up to 14.2% over individual models.

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