The newsletter identifies Jack Clark as an Anthropic co-founder when quoting his January 2026 assessment (development). Anthropic was founded in 2021; the role is recorded from the newsletter’s own attribution rather than from a fuller biography.
Role
Jack Clark, co-founder of Anthropic
The position in which he reported early signs of AI getting better at components of AI research.
Sources
Attribution and reporting linked by this record; links do not imply independent verification.
- Welcome to January 10, 2026 (theinnermostloop.substack.com)
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