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Non-profit

Coefficient Giving

Website:

coefficientgiving.org/
Location:

Palo Alto, CA
Type:

Grantmaking coalition
Formation:

2014
Associated Nonprofits:

Silicon Valley Community Foundation

Good Ventures

GiveWell

Open Philanthropy

Contact InfluenceWatch with suggested edits or tips for additional profiles.

Not to be confused with Open Philanthropy (Nonprofit)

Coefficient Giving (formerly known as the Open Philanthropy Project Fund) is a left-of-center grantmaking coalition that was created through a partnership with GiveWell and Good Ventures. In 2017, the coalition expanded by forming an independent nonprofit, Open Philanthropy, while continuing the OPP coalition’s grantmaking initiatives. 1

In 2025, Open Philanthropy announced that it would be rebranding as “Coefficient Giving” to differentiate itself and new grantmaking initiatives from the original grantmaking coalition of the OPP. At the end of 2024, Open Philanthropy co-founder Cari Tuna formed a new nonprofit, Open Philanthropy Advisors, but Coefficient Giving’s announcement of its name change did not acknowledge the new entity nor had it formally announced the end of the original OPP grantmaking coalition as of February 2026. 2

Coefficient Giving is part of the grantmaking network of Facebook co-founder Dustin Moskovitz and his wife Cari Tuna. Nearly all of Open Philanthropy’s funding comes from Moskovitz and Tuna. 3 The group also has a political arm, the Open Philanthropy Action Fund (OPAF). Combined, the three organizations have given almost $1.2 billion in grants since their founding. 4

Background

In 2007, Elie Hassenfeld, Holden Karnofsky, and the other six co-founders are affiliated with the “effective altruism” movement created GiveWell to analyze and evaluate charitable work in the United States. 5 6

In 2011, Dustin Moskovitz and Cari Tuna founded Good Ventures as a grantmaking foundation to give away their fortune throughout their lifetimes. Tuna became the organization’s president and met with many other charitable leaders for advice, including the founders of GiveWell. 3 Following the formation of GiveWell, GiveWell and Good Ventures launched the GiveWell Labs grantmaking initiative. Under the name GiveWell Labs, Good Venutres and GiveWell collaborated on grantmaking initiatives and supported the initiatives by disbursing grants to groups whose activities align with the initiative. 7 1

In 2014, GiveWell and Good Ventures renamed GiveWell Labs to Open Philanthropy Project to engage in a deliberative process of identifying areas of greatest impact for grantmaking and rebrand their shared grantmaking as an individual project as opposed to appearing as a project of GiveWell. 7 In 2017, Open Philanthropy, along with Open Philanthropy Project and the Open Philanthropy Action Fund, spun off as independent nonprofit organizations also led by Tuna 3

After forming as an independent nonprofit organization, Open Philanthropy began making grants that it disbursed on its own but in support of the grantmaking initiatives under the Open Philanthropy Project coalition. 8 In 2017, the OPP coalition also began expanding its grantmaking to include funding animal welfare advocacy, scientific research, epidemiology research, and foreign aid policy advocacy. 9

In November 2025, Open Philanthropy announced that it changed its name to “Coefficient Giving” to symbolize a new brand separate from its original Open Philanthropy Project and to allow its independent grantmaking projects have their own identity. 2

As Coefficient Giving branched off to form its own grantmaking initiatives independent from the OPP coalition in 2025, the original partnership the OPP had with Good Ventures continued to conduct their shared grantmaking initiatives. 10 As of February 2026, Good Ventures reports on its website that all of its grantmaking initiatives are conducted through its partnership with Coefficient Giving. 11

As of February 2026, Coefficient Giving and Good Ventures reported having collectively “directed” over $4 billion in grants since the founding of the Open Philanthropy Project from the time it originated under the name GiveWell Labs. 8 11

Grantmaking

As of September 2020, Open Philanthropy, along with Open Philanthropy Project Fund (OPPF) and Open Philanthropy Action Fund (OPAF) have given 998 grants worth $1,171,866,584. Most of these grants, which focus on scientific research, global health, and catastrophic risk, have been distributed through the OPPF. These recipients tend to be politically non-partisan. 4

Effective Altruism

Open Philanthropy is part of the “effective altruism” movement established in the late 2000s and early 2010s by two organizations, 80,000 Hours and Giving What We Can. Effective altruism seeks to maximize the value and efficiency of charitable donations, particularly in preventing existential threats to humanity such as climate change and rogue artificial intelligence. The movement tends to encourage donations to non-Western purposes which have a higher impact, and to long-term problems rather than short term alleviation. 12

In 2019, the Open Philanthropy Project Fund (OPPF) gave $1 million to the Effective Altruism Foundation, a research organization dedicated to exploring effective altruism ideas. 13 In 2020, the OPP gave an additional $15,000. 14 GiveWell senior research analysts James Snowden and Marinella Capriati were formerly employed by the Effective Altruism Foundation. GiveWell board member Julia Wise is the organization’s liaison to the Foundation. 6 80,000 Hours, another effective altruism organization, has received almost $10 million from the OPPF since 2017. 4

In October 2020, OPP posted a job listing seeking a program associate to increase grantmaking related to effective altruism. 15

Leadership

Dustin Moskovitz and Cari Tuna

Dustin Moskovitz is a co-founder of Open Philanthropy, 3 as well as a co-founder of Good Ventures. 16 Moskovitz was one of five co-founders of Facebook in 2004. Four years later he left the company but retained his ownership shares. He then co-founded Asana, a company that designs software to track workflow within organizations. In 2011, Moskovitz was added to the Forbes billionaire list as the youngest billionaire in the world with a net worth of $2.7 billion from his six percent ownership of Facebook. 17

As of February 2026, Moskovitz’s net worth was estimated at $10.6 billion by Forbes. 18

Cari Tuna is the co-founder of Open Philanthropy, the Open Philanthropy Project Fund (OPPF), and the Open Philanthropy Action Fund (OPAF); and the co-founder of Good Ventures. 16 She was previously a Wall Street Journal reporter. 19

Moskovitz and Tuna are notable supporters of Democratic candidates. Until the 2016 election, Moskovitz had only donated about $10,000 to Congressional candidate Sean Eldridge (D-NY), husband of Facebook co-founder Chris Hughes. 20 In 2016, Moskovitz wrote an article for Medium condemning Donald Trump and endorsing Hillary Clinton for president. Moskovitz and Tuna then promised to donate $20 million to Democratic PACs, including $5 million each to the League of Conservation Voters Victory Fund and Our Future PAC, and lesser sums to the Hillary Victory Fund, Moveon.org Political Action, Color of Change PAC, and several other organizations. 21 The donations made Moskovitz and Tuna the third largest donor in the 2016 election cycle. 22

Since 2016, Moskovitz and Tuna have continued to contribute to Democratic PACs. In 2017, Tuna gave $200,000 to Color of Change and just over $650,000 to Real Justice PAC. In 2018, Moskovitz gave $3 million to Moveon.org Political Action, $2 million to the Senate Majority PAC, and $430,000 to Civic Innovation USA. In the same year, Tuna gave $1.2 million more to Real Justice PAC. 23

In 2010, Moskovitz and Tuna became the youngest individuals to sign Warren Buffett’s “Giving Pledge” to give their fortunes to charity throughout their lifetimes. 24

Chloe Cockburn

In 2015, Chloe Cockburn joined Open Philanthropy as the criminal justice program officer. Since 2015, the Open Philanthropy Action Fund (OPAF) has made 322 grants worth $128,121,016 towards criminal justice reform organizations. 25

On June 2, 2020, Cockburn wrote a Twitter thread with a list of organizations that she considered to be the most efficient recipients of donations for criminal justice reform. She later rewrote the list as a memo to potential donors, and Vox wrote an article on Cockburn entitled, “A criminal justice expert’s guide to donating effectively right now.” 26 The list consisted of 25 left-of-center and far-left organizations, many of which are connected to Black Lives Matter. The listed organizations were:27

By October 2020, Open Philanthropy donated to Color of Change, The National Council for Incarcerated and Formerly Incarcerated Women and Girls, Real Justice PAC, Citizen Action of New York, Michigan Liberation, Justice LA, Voice of the Experienced, Southsiders Organizing for Unity and Liberation, Project Nia, Essie Justice Group, Equity and Transformation, and the Texas Organizing Project. 25

As of 2020, Cockburn was also the director and a board member of the Bia-Echo Foundation, a left-of-center grantmaking foundation. The organization focuses on three areas: abortion advocacy, environmental protection, and criminal justice reform. 28

Cockburn is the granddaughter of Claud Cockburn, a leading British communist. 29 Her father, Andrew Cockburn, is a filmmaker, author, and the Washington editor of Harper’s Magazine. 30 Chloe’s uncle, Alexander Cockburn, was a journalist who edited Newspunch and wrote for The Nation and The Week. He was an open Marxist and socialist, and later identified as an anarchist. 31 Another uncle, Patrick Cockburn, is also a journalist. He has worked for The Independent and the Financial Times and is best known for his reporting on the Iraq War. 32 One of Chloe’s sister is actress and director Olivia Wilde. 33

References

  1. “Our History.” Coefficient Giving. Accessed February 8, 2026. https://coefficientgiving.org/our-history/.
  2.  Bajekal, Naina. “The Story Behind Our New Name.” Coefficient Giving. November 18, 2025. https://coefficientgiving.org/research/the-story-behind-our-new-name/.
  3. “Who We Are.” Open Philanthropy. Accessed October 3, 2020. https://www.openphilanthropy.org/about/who-we-are.
  4. “Grants Database.” Open Philanthropy Project. Accessed October 3, 2020. https://www.openphilanthropy.org/giving/grants.
  5. “Our Story.” GiveWell. Accessed October 3, 2020. https://www.givewell.org/about/story.
  6. “Our People.” GiveWell. Accessed October 3, 2020. https://www.givewell.org/about/people.
  7. Karnofsky, Holden. “Open Philanthropy Project (formerly GiveWell Labs).” Coefficient Giving. August 20, 2014. https://coefficientgiving.org/research/open-philanthropy-project-formerly-givewell-labs/.
  8. “Who We Are.” Coefficient Giving. Accessed February 8, 2026. https://coefficientgiving.org/about-us/.
  9. [1] “Our History.” Coefficient Giving. Accessed February 8, 2026. https://coefficientgiving.org/our-history/.
  10. Berger, Alexander and Reid, Otis. “Announcing Our New $120M Abundance & Growth Fund.” Coefficient Giving. March 11, 2025. https://coefficientgiving.org/research/announcing-our-new-120m-abundance-and-growth-fund/.
  11.  “We choose causes based on where we believe more funding will have the biggest impact on others.” Good Ventures. Accessed February 8, 2026. https://goodventures.org/our-giving/.
  12. Matthews, Dylan. “You have $8 billion. You want to do as much good as possible. What do you do?” Vox. October 16, 2018. Accessed October 3, 2020. https://www.vox.com/2015/4/24/8457895/givewell-open-philanthropy-charity.
  13. “Effective Altruism Foundation – Research and Operations.” Open Philanthropy Project. Accessed October 3, 2020. https://www.openphilanthropy.org/giving/grants/effective-altruism-foundation-research-operations.
  14. “Effective Altruism Foundation – European Policy Research.” Open Philanthropy Project. Accessed October 3, 2020. https://www.openphilanthropy.org/focus/global-health-and-development/miscellaneous/effective-altruism-foundation-european-policy-research.
  15. “Effective Altruism Program Associate.” Open Philanthropy Project. Accessed October 3, 2020. https://www.openphilanthropy.org/get-involved/jobs/effective-altruism-program-associate.
  16. “Learn about our structure and leadership.” Good Ventures. Accessed October 3, 2020. https://www.goodventures.org/about-us/governance.
  17. Fox, Zoe. “Forbes’s Youngest Billionaire: Facebook Co-Founder Dustin Moskovitz Edges Out Zuckerberg.” Time. Accessed October 3, 2020. https://newsfeed.time.com/2011/03/10/forbess-youngest-billionaire-facebook-co-founder-dustin-moskovitz-edges-out-mark-zuckerberg/.
  18. “Dustin Moskovitz.” Forbes. Accessed February 9, 2026. https://www.forbes.com/profile/dustin-moskovitz/.
  19. “Cari Tuna.” Open Philanthropy. Accessed October 3, 2020. https://www.openphilanthropy.org/about/team/cari-tuna.
  20. Confessore, Nicholas. “Dustin Moskovitz, Facebook Co-Founder, Pledges $20 Million to Aid Democrats.” New York Times. September 9, 2016. Accessed October 3, 2020. https://www.nytimes.com/2016/09/10/us/politics/facebook-trump-dustin-moskovitz.html.
  21. Moskovitz, Dustin. “Compelled to Act.” September 6, 2016. Accessed October 3, 2020. https://medium.com/@moskov/compelled-to-act-1413930041ee#.idquozq7d.
  22. Schleifer, Theodore. “Facebook co-founder Dustin Moskovitz commits $20 million to help beat Trump.” CNN. September 9, 2016. Accessed October 3, 2020. https://www.cnn.com/2016/09/09/politics/facebook-cofounder-gift-democrats.
  23. “Tuna, Cari: Donor Detail.” Open Secrets. Accessed October 5, 2020. https://www.opensecrets.org/outsidespending/donor_detail.php?cycle=2018&id=U0000004592&type=I&super=N&name=Tuna%2C+Cari.
  24. Cha, Ariana Eunjung “Cari Tuna and Dustin Moskovitz: Young Silicon Valley Billionaires Pioneer New Approach to Philanthropy.” Washington Post. December 26, 2014. Accessed October 3, 2020. https://www.washingtonpost.com/business/billionaire-couple-give-plenty-to-charity-but-they-do-quite-a-bit-of-homework/2014/12/26/19fae34c-86d6-11e4-b9b7-b8632ae73d25_story.html.
  25. “Grants Database.” Open Philanthropy. Accessed October 5, 2020. https://www.openphilanthropy.org/giving/grants.
  26. Matthews, Dylan. A criminal justice expert’s guide to donating effectively right now.” Vox. June 9, 2020. Accessed October 5, 2020. https://www.vox.com/future-perfect/2020/6/9/21281538/how-to-donate-to-black-lives-matter-charity.
  27. “Chloe Cockburn thread.” Twitter. June 20, 2020. Accessed October 5, 2020. https://twitter.com/chloecockburn/status/1267895984895467521
  28. “Chloe Cockburn.” Bio-Echa Foundation. Accessed October 4, 2020. https://biaecho.org/project/cloe-cockburn/.
  29. “Claud Cockburn.” Spartacus Educational. Accessed October 4, 2020. https://spartacus-educational.com/SPcockburn.htm.
  30. “Andrew Cockburn.” Prabook. Accessed October 4, 2020. https://prabook.com/web/andrew.cockburn/3757349.
  31. “Five Days that Shook the World: Seattle and Beyond.” C-SPAN. Accessed October 4, 2020. https://www.c-span.org/video/?161120-1/five-days-shook-world-seattle-beyond.
  32. “Patrick Cockburn.” Independent. Accessed October 4, 2020. https://www.independent.co.uk/author/patrick-cockburn.
  33. “Olivia Wilde’s son is ‘hard’ on his younger sister.” AP News. June 15, 2017. Accessed October 4, 2020. https://apnews.com/article/20068bf24e354960ac39da3d21d82a5f.
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Coefficient Giving


Palo Alto, CA