Eric Easley
Eric Easley is an AI researcher whose work spans language-model safety, chain-of-thought reliability, and formal verification. He published a Haskell library for polymorphic directed graphs in 2016 and holds a bachelor's degree in physics and economics from Ohio State. Before AI alignment research, he gained software engineering experience at PullRequest and Coursera; by March 2026, he was affiliated with MATS and had received a six-month stipend for language-model safety research. In 2026, he coauthored research on defenses against LLM jailbreaks and on faithful chain-of-thought reasoning. As of October 2026, he is a member of Anthropic staff; in August 2026, he worked with Claude on a Lean formalization of a Riemann-zeta result that raised the known lower bound from 41.6% to 67.2%.
Timeline
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2016
A Haskell graph library
In 2016, he publishes poly-graph, a Haskell library for polymorphic directed graphs.
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By March 2026
Physics and economics at Ohio State
By March 2026, he is affiliated with MATS as an AI safety and machine-learning researcher. He holds a bachelor's degree in physics and economics from Ohio State.
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By March 2026
An AI safety research stipend
Before focusing on AI alignment, he gains software engineering experience at PullRequest and Coursera. By March 2026, a six-month Long-Term Future Fund stipend supports his work to remove conditional bad behaviors from language models through a learned latent-space intervention.
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April 2026
Defending LLMs with LIRA
In April 2026, he coauthors the Latent Instruction Representation Alignment paper with Sebastian Farquhar. The method changes how a language model interprets instructions and reports blocking over 99% of PEZ jailbreak attacks, removing an insecure code backdoor, and achieving optimal forgetting on WMDP cyber with negligible loss of benign capabilities.
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May 2026
Faithful chain-of-thought research
He coauthors a May 2026 paper with Jinghan Jia and Joe Benton that frames chain-of-thought faithfulness as an information-flow problem. Their metrics assess sufficiency, completeness, and necessity, and their training interventions strengthen the path from prompt through reasoning trace to answer.
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August 2026
A stronger zeta zero bound
In August 2026, Claude's unreleased research model raises the lower bound for Riemann zeta zeros on the critical line from 41.6% to 67.2% by combining earlier analytic number-theory results.
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August 2026
Lean formalization at Anthropic
In August 2026, he works with Claude to produce a Lean formalization of the result; the formalization passes the standard validation tool comparator.
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As of October 2026
Anthropic staff member
He is a member of Anthropic staff. He contributes discussion and support to the company's August 2026 study of a misaligned reward seeker.
Sources and credits
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- poly-graph: Polymorphic directed graphs
- Eric Easley
- Latent Instruction Representation Alignment: defending against jailbreaks, backdoors and undesired knowledge in LLMs
- Faithfulness as Information Flow: Evaluating and Training Faithful Chain-of-Thought Reasoning
- Claude has improved on a longstanding lower bound for the fraction of zeros of the Riemann zeta function that satisfy the Riemann hypothesis
- Training a Misaligned Reward Seeker
