Decontamination reports can't fix benchmark contamination, evaluator must own the test

A write-up argues lab-run decontamination reports cannot fix benchmark contamination: labs check themselves, corpora contain copyrighted works that can't be disclosed, and paraphrase, forum, GitHub, or synthetic-derived data evade matching. It proposes evaluators own the test, submissions never see labels, evaluation runs offline and is rebuilt from a named commit, and where possible test data is generated after submissions freeze, with only reproduced results counting.

• Moonshot's open-weight model tops OpenAI on financial research benchmark2026-11-06
• Report: closed models dominate price-performance frontier as open share hits low2026-11-06
• Australian universities expand ChatGPT access to build AI-native graduates2026-11-06
• Franklin Templeton taps OpenAI for investment research2026-11-06
• Cult.fit uses Codex to boost operational efficiency2026-11-06