Published: September 2017; Last Updated: December 2025
Coefficient Giving, formerly Open Philanthropy, began as a partnership between GiveWell and Good Ventures, a philanthropic foundation founded by Cari Tuna and Dustin Moskovitz, one of the co-founders of Facebook and Asana. Open Philanthropy became an independent organization in June 2017.
GiveWell and Coefficient Giving are now separate entities with separate financial and human resources and separate governing bodies. Each organization determines how to allocate its own resources. Coefficient Giving and Good Ventures have provided support for GiveWell's operations, capped, for reasons described here, at 20 percent of GiveWell's operating expenses.
The organizations continue to share many core values. Much of Coefficient Giving's grantmaking in global health and development has been to organizations GiveWell recommends, and Coefficient Giving also has research staff who focus on global health and well-being. In addition, Cari Tuna, Chair of Coefficient Giving, sits on GiveWell's Board of Directors, and GiveWell's CEO, Elie Hassenfeld, sits on Coefficient Giving's Board of Managers.
If you have additional questions about the relationship between GiveWell and Coefficient Giving, please contact us.