Photo of Alexander Quispe

Hi! I'm a Ph.D. student in Computing and Mathematical Sciences at Caltech. Before that, I did an M.S. in Computer Science at Cornell and was a researcher at the World Bank Data Lab. Here is my CV.

I work on the economics of AI, especially how AI coding agents change what software developers build.

Email / CV / Google Scholar / GitHub / X / LinkedIn / Blog

Working Papers

  1. Agentic Delegation and the Language Frontier of Software Developers: A Model and Evidence from Claude Code on GitHub
    (with Kevin Xu) · 2026 · [arXiv]

    When developers adopt Claude Code, the set of programming languages they work in roughly triples, and first uses of unfamiliar languages concentrate among narrow specialists.

  2. Agentic AI and the Industry Composition of Developer Work
    (with Kevin Xu) · 2026 · [draft]

    Around first Claude Code use, developers' public work spreads into new industries: monthly distinct sectors nearly triple, and the cumulative sectoral footprint stays about 50% higher.

  3. Renting Intelligence: Student Responses to an Exogenous Downgrade in AI Model Quality
    (with Kevin Xu) · 2026 · [draft]

    When GitHub moved students from Copilot Pro to a plan without premium models, their AI-assisted commits fell by roughly 83% of the pre-period mean relative to matched controls.

  4. A Unified Economic Model of Agentic Coding Automation
    2026 · [draft]

    How many coding agents can an organization run? The tightest of verification, isolation, and demand constraints sets the scale, and the practitioners' five maturity stages correspond to which one binds.

  5. Impact of the Availability of ChatGPT on Software Development: A Synthetic Difference in Differences Estimation using GitHub Data
    (with Rodrigo Grijalba) · 2023 · [arXiv]

    Using government bans of ChatGPT as natural experiments, we find that access raised git pushes, repositories, and developers per capita on GitHub.

Earlier Work

  1. Can Market Competition Reduce Public Sector Corruption?
    (with Muhammad Haseeb, Amen Jalal & Kate Vyborny) · 2023 · draft on request
  2. High Dimensional Metrics in Julia
    (with Victor Chernozhukov, Christian Hansen & Martin Spindler) · 2022 · [pdf]
  3. Fertility and Education Patterns Across Different Phases of Development
    2020 · [pdf]

Software

Causal ML packages

  • csdid: average treatment effect parameters in Difference-in-Differences, including doubly robust estimation.
  • DRDIDpy: estimators for the ATT in DiD when parallel trends hold after conditioning on pre-treatment covariates.
  • TreatmentEffectRisk: bounds and inference for treatment effect risk.
  • synthdid.py, synthdid.jl: Python and Julia implementations of Synthetic Difference-in-Differences (Arkhangelsky et al., 2021).
  • HDMjl: estimation methods for high-dimensional models in Julia (Chernozhukov et al., 2016).
  • Sensemakr.jl: sensitivity analysis tools in Julia (Cinelli et al., 2020).

Books and teaching resources

  • Inference on Causal and Structural Parameters using ML and AI, used in course 14.388 at MIT [R][Python][Julia]
  • Machine Learning and Causal Inference, used in course MGTECON 634 at Stanford [R][Python]

AI projects

  • ILLA: an AI assistant that helps identify potential obstetric and gynecological violence [media]
  • DigitalPillarAI: a GPT-4 tool that classifies World Bank Project Appraisal Documents into six pillars.
  • llm4tesis: a GPT-4 tool that generates research questions from the PUCP Economics thesis repository.

News

Teaching

  • Causal Inference and Machine Learning
    Graduate course, Universidad del Pacífico, 2024 [GitHub][students]
    Graduate course, Department of Economics, PUCP, 2021 [GitHub][students]
  • Python Intensive Course
    Graduate course, Laboratory of Artificial Intelligence and Computational Methods in Social Sciences, PUCP, 2021 [GitHub][students]
  • Python Bootcamp
    The Code Blinders, 2021 [GitHub]

Research Team

Alumni: Karl Janampa (SGS Peru), Rodrigo Grijalba (Predoc, Princeton), Jhon Flores (LSE), Valeria Albarracin (Diplomatic Academy of Peru), Franco Cáceres, Sandra Martinez (Columbia), Roberto Mendoza (Predoc, Princeton), Anzoni Quispe (Predoc, Princeton), Yoseph Ayala (RA, Columbia), Elibeth Cirilo (University of Warwick), Jesus Soto (Data Scientist, Interbank)