← Back to PeopleZKResearcherZhewei KangResearcher at LacunaZhewei Kang is a researcher at Lacuna.1Mentions1Articles1OutletsArticlesMost recent firstMentioned InReferenced in coverageNew critic-free training method beats GRPO on hard math benchmarks by 18%arXivpositiveJun 22, 2026“Co-author of VIMPO paper on critic-free policy optimization for LLMs showing improvements over GRPO.”