Conceptual Reasoning Fellow

Highlights

• Partner with Anthropic researchers to test Claude on judgment-heavy domain problems.
• Design evaluations and RL environments that probe Claude's reasoning in your field.
• Turn open problems and societal challenges into working tests of AI capabilities.

What they offer

• Four-month fellowship compensation plus other benefits
• Access to frontier Claude models and internal evaluation tooling
• Mentorship from Anthropic researchers and cohort collaboration
• Generous vacation and parental leave, flexible hours

Ideal candidate

A PhD-level researcher in philosophy, cognitive science, economics, policy or law who loves hard judgment questions and wants to partner with frontier models to advance their field.

Requirements

• Excited about AI reasoning on hard questions requiring expert judgment
• Hands-on experience using Claude and Claude Code in daily workflow
• Hold (or completing) a PhD in philosophy, cognitive science, economics, policy or law, or equivalent research experience
• Comfortable in fast-paced, high-agency environment delivering concrete results
• Existing authorization to work in the United States for duration of program
• Experience designing evaluations, benchmarks, datasets, or expert rubrics (preferred)
• Demonstrated expertise via research, scholarship, or expert analytical writing (preferred)