OpenAI and Two Others Sign AEF-1 Standard; Same Day, 100 Scholars Warn of Enforcement Risks in Open Letter
On September 18, 2026, OpenAI, Anthropic, and xAI signed the AEF-1 embedded evaluation standard, while more than 100 researchers including Geoffrey Hinton and Stuart Russell signed an open letter warning that the existing framework is insufficient to prevent conflicts of interest. The simultaneous moves highlight the tension between principles and enforcement.