# RockAI Matrix open-sources EdgeRock-4B: KV Cache does not grow with context, single-card throughput reaches 6.42x the original model

- Source: 甲子光年 · 微信公众号
- Published: 2026-10-22T11:29:12.000Z
- RoboHot: https://robohot.news/en/items/h4eu6f73v7zjyj17sycf8g8et
- Original: https://mp.weixin.qq.com/s?__biz=MzU5OTI0NTc3Mg==&mid=2247559421&idx=1&sn=9285a1d29c6d189dd11def0d9e6bd66e&chksm=ffdc7b42aef8316d8b842d854bc3ebf2ec5caf16fbad014580f9aeeb5402a79c1af0f854ed29&scene=126&sessionid=1792690479#rd

## Summary

RockAI Matrix, under RockAI Technology, together with universities including the Hong Kong University of Science and Technology and Carnegie Mellon University, released and open-sourced EdgeRock-4B. The model is converted from Qwen3.5-4B, and its core is the Memory Rock Anchor (RMA) mechanism proposed by the team, which keeps the KV Cache from growing with context.