Coefficient Giving (previously Open Philanthropy) is a research and grantmaking foundation based in San Francisco.

History

Coefficient Giving launched in late 2011, as a partnership between Good Ventures and GiveWell.^[1] The partnership operated under the name GiveWell Labs before adopting, in August 2014, the name Open Philanthropy Project.^[2] It continued to be part of GiveWell until 2017, when it became an independent organization.^[3] The name was changed to Open Philanthropy around December 2019, and Coefficient Giving in November 2025.^[4]

Leadership

Coefficient Giving's leadership can be viewed on its team page.^[5] At present, Alexander Berger is the CEO, and Cari Tuna is the chair.