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Coefficient Giving
About Us

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Media inquiries: To ask about our work, or speak with experts on our staff, please contact media@coefficientgiving.org.

All other inquiries: Please contact info@coefficientgiving.org.

Coefficient by the numbers

Coefficient Giving is a philanthropic advisor and funder. We work with a range of donors who share our commitment to cost-effective, high-impact giving. 

$4 billion

We’ve directed over $4 billion in grants since 2014.

2,500+ grants

We’ve made more than 2,500 grants since our founding.

13 funds

Our grantmakers and researchers work across 13 philanthropic funds that we have identified as areas where philanthropic capital can have an especially high impact. 

100,000 lives

GiveWell estimates that our grants expanding access to scalable, evidence-backed global health interventions like antimalarial bednets and vitamin A supplementation have saved over 100,000 lives, mostly of children under 5. 

3 criteria

To choose causes (and individual grants), we focus on three principles:

  • Importance: The scale and severity of the problem
  • Neglectedness: Whether the cause receives adequate attention and resources
  • Tractability: The likelihood that additional resources can create meaningful progress

To learn more, check out our history, list of funds, and published work.

Coefficient in the news

Coefficient Giving was formerly called Open Philanthropy. Read more about the change here.

One of the world’s most influential philanthropies is changing its name. Here’s why it matters.

Vox

Now, as it enters its second decade, Open Philanthropy is changing its name — and changing some of what it does. It will now call itself Coefficient Giving, a rebrand meant to signal that the organization is moving from primarily serving one anchor donor — Moskovitz and Tuna — to advising and deploying capital for many.
Billionaire Cari Tuna on why the organization she started will offer free advice to other donors

Associated Press

For San Francisco-based billionaire Cari Tuna, the most important decision a philanthropist can make is deciding what cause to support. Starting Tuesday, the organization she helped found will offer help to other major donors making those choices.
Good Ventures’ Cari Tuna has philanthropy down to a science

San Francisco Business Times

“We’re constantly grappling with uncertainty and making difficult judgment calls and updating based on new evidence,” Tuna said. “But the goal is always the same: to help others as much as we can.”
We can protect millions of kids from a global killer — without billions of dollars - Revista de Prensa We can protect millions of kids from a global killer — without billions of dollars

The Washington Post

Every year, lead poisoning is estimated to cost the global economy more than $1 trillion and claims at least 1.5 million lives. Yet the yearly global funding for tackling lead poisoning in developing countries totals just $15 million.
The world’s spending to fight global lead poisoning just doubled

Vox

Once funders realized just how bad the lead problem is and how cheaply it could be mitigated by tackling causes of poisoning like lead paint, contaminated spices, and industrial recycling, they got on board.

Learn more about our work