Max Ghenis
Building open-source tools that help people understand how policy affects their lives and their communities.
Current work
PolicyEngine
Open source software to simulate tax and benefit policies in the US and UK. Our tools help policymakers, researchers, and the public understand how reforms affect households and society.
Visit policyengine.orgRecent writing
Can Talkie-1930 do arithmetic?
I tested Talkie-1930 on GSM8K and the easier EleutherAI/OpenAI arithmetic suite, then packaged an lm-eval-harness runner so the runs are reproducible.
Read moreBillionaires aren't 'just as likely' to be nonpayers as top taxpayers
Checking Ray Madoff's claim on The Ezra Klein Show against ProPublica and PolicyEngine microdata.
Read moreI built a MyST-to-Quarto converter (and why you might need one)
mystquarto converts academic markdown between MyST and Quarto formats — directives, roles, config files, and frontmatter. Now on PyPI.
Read moreSide projects
Academic research
What can LLMs tell us about the ETI?
With Jason DeBacker. How LLMs perceive behavioral responses to tax policy.
Beer Price Controls at Yankee Stadium
Economic analysis of stadium pricing, externalities, and welfare.
AI Model Policy Impact Forecasts
Examining LLMs for forecasting policy outcomes under different administrations.
Enhancing Survey Microdata with Administrative Records
Novel approach to microsimulation dataset construction. Presented at NTA 2024.