Xiaomi's HarnessX autonomously rewrites AI agent scaffolding mid-task, boosting performance by up to 44%

Summary

Xiaomi researchers have introduced HarnessX, a novel framework that treats AI agent harnesses — the software scaffolding connecting LLMs to their environments — as composable objects that can be autonomously rewritten mid-execution. Unlike traditional static, hand-crafted harnesses, HarnessX dynamically improves its own code based on execution data, delivering an average performance gain of +14.5% and up to +44% for smaller open-weight models. This addresses a key engineering bottleneck in enterprise AI agent deployment for complex, long-horizon tasks.

Source

bskyXiaomi's HarnessX autonomously rewrites AI agent scaffolding mid-task, boosting performance by up to 44%venturebeat.com