Sam McCandlish — Notable For: Co-founder of Anthropic; co-author of neural scaling laws research; formerly at OpenAI

NoteThe source directly confirms all three components of the claim. The Bio section states he is 'co-founder of Anthropic, the public-benefit corporation' and 'Chief Architect'. The Career section confirms he 'was the second-named author of the January 2020 paper "Scaling Laws for Neural Language Models"' and that he 'joined OpenAI around 2018 as a research scientist' before leaving in December 2020. The Notable contributions section further reinforces the neural scaling laws research credit. All three elements of the claim are explicitly supported by the source text.