PACE: Anytime-Valid Acceptance Tests for Self-Evolving Agents

In three linesPACE is an anytime-valid acceptance method for self-evolving agents. It replaces the naive "keep if score increases" rule with sequential hypothesis testing via betting e-process. On Qwen2.5 (0.5B-3B) on GSM8K/SVAMP/ARC-Challenge, PACE reduces false commits from 30-42% to near-zero and cuts evaluation costs by 18%.

Summary generated by Claude — human-verified