Beth Barnes — Notable For: Founded METR (formerly ARC Evals), pioneering dangerous capability evaluations for frontier AI models; led pre-deployment evaluations of GPT-4 and Claude

NoteThe source directly confirms all key elements of the claim: (1) Beth Barnes founded METR (confirmed as Founder and CEO); (2) METR was formerly ARC Evals (explicitly stated in December 2023 post); (3) the organization conducts dangerous capability evaluations for frontier AI models (confirmed through descriptions of evaluations and multiple published reports on risk assessment); (4) she led pre-deployment evaluations of GPT-4 and Claude (confirmed through multiple references including 'Update on ARC's recent eval efforts' from March 2023 mentioning GPT-4 and Claude evaluations, and August 2024 post 'An update on our general capability evaluations' with preliminary results for GPT-4 and Claude). The source material extends through May 2026, confirming the 'as of 2026-03' timeframe is accurate.