Cache-to-Cache: Direct Semantic Communication Between LLMs (2025)

What changed

Researchers proposed Cache-to-Cache, a method enabling direct semantic communication between LLMs via KV-cache projection instead of text.

Why you should care

Direct KV-cache transfer could reduce latency and improve accuracy in multi-LLM systems.

Your move

Watch. Monitor for open-source implementations or integration into multi-agent frameworks.

Evidence

ConfirmedarXiv — cs.CL ↗

What to watch next

Release of open-source code or benchmarks demonstrating C2C performance in real-world multi-LLM deployments.

Event

research

Event date

Sep 18, 2026

Relevant to

General AI readers