The Billion Prices Project


Initiatives and Related Projects

Some practical applications of our research
Inflacion Verdadera Argentina

A daily inflation index for Argentina. Published from 2007 to 2018 as an alternative to the official CPI which was manipulated by the government during the period 2007-2016. This is how we first started using online prices to measure inflation.

Inflacion Verdadera Venezuela

Our latest project using mobile phones and crowd-sourcing to measure Venezuela’s inflation rate

Online-Offline Comparisons

An attempt to validate online data and better understand how offline pricing behaviors are being affected by the web and mobile browsing/price‐checking technologies.

PriceStats Daily Inflation and PPP Statistics

PriceStats is the company that collects the online prices used by the BPP. It currently publishes daily inflation and PPP indices in over 20 countries.

Click here for a historical comparison of the US Online Index and the CPI.

For more up-to-date inflation metrics in over 20 countries see

Help us Measure Inflation in Venezuela

We need help collecting and validating prices in Venezuela. Whether you are local or not, you can help.

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About US

What we do
"Big Data" for Macro and International Economics

The Billion Prices Project is an academic initiative that uses prices collected from hundreds of online retailers around the world on a daily basis to conduct research in macro and international economics. It was founded in 2008 by Alberto Cavallo and Roberto Rigobon. This page shows our most recent research and links to related projects.

  • Daily Prices


  • Retailers

    More than 1000

  • Countries with Data


  • Dates

    From 2008 on

Our Team

Current team members
Alberto Cavallo
Alberto Cavallo
Harvard Business School
Alberto is an Associate Professor at Harvard Business School, a Faculty Research Fellow at the NBER, and a member of the Technical Advisory Committees of the US BLS.

Personal Website

Roberto Rigobon
Roberto Rigobon
MIT Sloan
Roberto is the Society of Sloan Fellows Professor of Management and a Professor of Applied Economics at the MIT Sloan School of Management, a research associate of the NBER, and a member of the Census Bureau’s Scientific Advisory Committee.

Personal Website

Maria Fazzolari
Maria Fazzolari
Research Assistant
Carolina Pizarro
Carolina Pizarro
Research Assistant
Anne Laski
Anne Laski
Research Assistant

Recent Papers


News and Media
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