What Coefficient Giving does

Coefficient Giving, formerly Open Philanthropy, is a private philanthropic funder and advisor headquartered in San Francisco, founded in 2014 by Cari Tuna and Dustin Moskovitz through their foundation Good Ventures. The organization operates a multi-donor fund platform comprising 14 thematic funds spanning global health (malaria, TB, Strep A vaccine development), AI safety and governance, biosecurity and pandemic preparedness, farm animal welfare, catastrophic risk mitigation, economic growth and abundance, and lead exposure remediation. Each fund is staffed by specialized program officers and supported by an underlying Importance-Neglectedness-Tractability research framework used to evaluate over 200 potential cause areas.

The core product is the multi-donor pooled fund vehicle, complemented by custom grant portfolios, learning journeys for donors exploring new cause areas, and operational advising. Coefficient has directed over $5 billion in grants since 2014, including over $1 billion in 2025 alone — the most in its history. Distribution is sales-led and relationship-driven, targeting high-net-worth philanthropists, major foundations, and donor-advised funds. The Lead Exposure Action Fund alone pools capital from twelve philanthropic partners including the Gates Foundation and ELMA Foundation.

Coefficient does not charge fees; its operating model depends on donor-partner capital, primarily from Good Ventures with growing contributions from Patrick Collison, Lucy Southworth, Adam and Abigail Winkel, and others. In November 2025 the organization rebranded from Open Philanthropy to Coefficient Giving to mark its pivot to a multi-donor orientation. The organization has recently extended its instrument set into direct for-profit equity investing, leading a $45 million Series A in VST BIO Corporation (stroke therapeutics) in March 2026, and into filling US foreign-aid gaps, co-backing the relaunch of USAID's Development Innovation Ventures as an independent nonprofit in February 2026.

Name

Coefficient Giving

Legal name

Coefficient Giving

Website

https://coefficientgiving.org

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

51–100 employees

Short description

Coefficient Giving is a San Francisco-based philanthropic funder and advisor that has directed over $5 billion in grants across 14 thematic funds since 2014. It partners with billionaire donors, foundations, and regrantors to fund high-impact opportunities in global health, AI safety, biosecurity, animal welfare, and economic growth.

Ownership category

akta.pro rank

Product category

Philanthropic Advisory and Grantmaking

NAICS

Grantmaking Foundations (813211), Voluntary Health Organizations (813212), Grantmaking and Giving Services (81321)

akta.pro primary industry

Donor-Advised Fund (DAF) Sponsors (BPAGAKAF)

akta.pro secondary industries

Grantmaking & Philanthropic Funds (Institutional Donors) (BPADAOAB), Scholarship & Fellowship Foundations and Trusts (EDADAHAC)

Keywords

• Philanthropic grantmaking
• Multi-donor funds
• Strategic cause selection
• High-impact philanthropy
• Philanthropic advisory

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Philanthropic Grantmaking: Coefficient Giving operates as a philanthropic funder and advisor that directs grants to high-impact causes. They do not charge fees for their services. Revenue comes from funding partnerships with donors including Good Ventures and other philanthropists who commit capital to be granted out to effective causes.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Coefficient Giving is a philanthropic funder and advisor that directs grants to high-impact causes and provides pro-bono advisory services to wealthy philanthropists and foundations. It operates 14 thematic funds covering global health, AI safety, biosecurity, economic growth, farm animal welfare, air quality, lead exposure, aid policy, and scientific R&D, with each fund managed by specialized teams conducting research, curating grant opportunities, and administering multi-donor pooled vehicles.

Product overview

Coefficient Giving is a philanthropic funder and advisor that operates a multi-donor fund platform. The organization directs grants across 14 distinct thematic funds covering global health, pandemic preparedness, AI safety, economic growth, animal welfare, and environmental causes. The core platform enables philanthropists to pool resources around high-impact opportunities identified through strategic cause selection research, with each fund managed by specialized teams and targeting specific global challenges.

Differentiator

Problem solved

Functional benefit

Products and services

• Multi-Donor Fund Platform Philanthropic fund platform that enables multiple donors to pool resources into focused cause areas, providing research-backed fund management, grantmaking oversight, and strategic advisory services across diverse global health and risk mitigation areas.
• Abundance & Growth Fund Multi-donor fund supporting efforts to accelerate economic growth, boost technological progress, and reduce regulatory barriers to prosperity in the United States, with focus on housing policy reform, innovation policy, and energy abundance.
• Air Quality Fund Supports work to improve air quality for over a billion people in South Asia, funding research, data collection, technical assistance for governments, and initiatives to address specific pollution sources like brick kilns and crop residue burning.
• Biosecurity & Pandemic Preparedness Fund Supports research, technology, and policy initiatives to prevent and mitigate catastrophic biological risks, with particular focus on technological risks from advances in biotechnology and AI.
• Effective Giving & Careers Fund Supports organizations that help people use their careers and charitable giving to maximize positive impact, including effective giving research and career advising programs.
• Farm Animal Welfare Fund Supports efforts to end factory farming and improve animal welfare through advocacy for reforms, scientific research on humane technologies, movement-building, and alternative protein development.
• Forecasting Fund A closed fund that supported quantitative forecasting research, platform development, forecasting tournaments, and projects promoting probabilistic forecasting for high-stakes decisions related to global catastrophic risks.
• Global Aid Policy Fund Supports efforts to increase and improve international aid from wealthy to developing countries, including protecting aid levels, steering funding toward cost-effective interventions, and improving aid efficiency.
• Global Catastrophic Risks Opportunities Fund Supports work on reducing global catastrophic risks outside dedicated AI and biosecurity funds, including academic research, field-building, and career development for GCR researchers.
• Global Growth Fund Supports work to accelerate economic growth and reduce poverty in low- and middle-income countries through policy research, advisory work, and advocacy focused on export-oriented manufacturing, energy access, and trade links.
• Global Health & Wellbeing Opportunities Fund Supports evidence-backed interventions to improve health and wellbeing for the world's poorest people, primarily through grants to GiveWell-recommended organizations for malaria control, clean water access, and vaccination programs.
• Lead Exposure Action Fund (LEAF) A multi-donor fund addressing lead exposure as a global public health crisis, supporting measurement, mitigation, and mainstreaming of lead poisoning prevention in low- and middle-income countries.
• Navigating Transformative AI Fund Supports technical AI safety research, AI governance and policy work, capacity building for the AI safety field, and new projects to address risks from transformative AI systems.
• Science and Global Health R&D Fund Supports research and development into new global health tools including transformative basic research, preclinical and clinical studies for treatments, vaccines, and diagnostics, and implementation research for health systems.
• Strep A Vaccine Fund A multi-donor initiative to accelerate the development of Strep A vaccines, supporting vaccine candidate advancement through clinical trials, scientific foundations, next-generation vaccine development, and deployment preparation.

Quantifiable outcome

• 100,000+ lives saved through global health interventions
• +4 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered major and core.

• The Center for Responsible Seafood (TCRS)majorStrategic or Co-development Partner · 14 January 2026Received $1.1 million two-year grant from Coefficient Giving to advance farmed fish welfare research, evaluating novel humane stunning technologies including pressure-wave methods and machine-vision-guided laser targeting.
• Livelihood Impact FundcoreStrategic or Co-development PartnerPartner in the Global Growth Fund to stimulate economic growth in low- and middle-income countries with at least $40 million in funding over the first three years.
• Patchwork CollectivecoreStrategic or Co-development PartnerPartner in Global Aid Policy fund, collaborating on international development initiatives.
• GiveWellcoreStrategic or Co-development PartnerMajor recipient of funding with over $1 billion committed to their recommendations. GiveWell identifies cost-effective, evidence-backed global health charities.

Scale indicators17 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• GiveWell: GiveWell is the most direct peer in evidence-based philanthropic research and grantmaking, focused on identifying cost-effective global health and poverty interventions. Coefficient has committed over $1 billion to GiveWell-recommended organizations, and the two organizations share the same effective altruism intellectual roots and donor base.
• Arnold Ventures: Arnold Ventures is a large-scale strategic philanthropy (~$2B annually) operating across evidence-based policy, criminal justice, health, and education. Like Coefficient, it employs rigorous cause-selection frameworks and concentrates capital in underfunded, high-leverage areas.
• Blue Meridian Partners: Blue Meridian Partners aggregates capital from multiple philanthropists to fund scaled solutions for children and families. Its pooled-fund model is structurally similar to Coefficient's multi-donor vehicles (e.g., Strep A Vaccine Fund, Lead Exposure Action Fund).
• The Audacious Project: The Audacious Project, housed at TED, sources and curates high-impact philanthropic projects and pools donor commitments around them. It shares Coefficient's model of identifying vetted opportunities and aggregating multiple donors into single large-scale commitments.

Emerging players

• EA Funds: EA Funds is a smaller pooled-fund platform within the effective altruism movement, running Animal Welfare, Global Health, and Long-Term Future funds. It is a direct emerging peer in the EA-aligned pooled-fund niche where Coefficient's multi-donor model originates.

Broad incumbents

• Open Society Foundations: Open Society Foundations is one of the largest private foundations globally (~$25B endowment), with grantmaking across human rights, governance, and global development. It is a broad incumbent comparable in scale and ambition but with a portfolio-style rather than hits-based approach.
• Conrad N. Hilton Foundation: The Conrad N. Hilton Foundation is a major private foundation (~$3B) that makes large multi-year strategic grants, co-funded the Lead Exposure Action Fund alongside Coefficient. It is a broad incumbent in the strategic-philanthropy space where Coefficient operates.
• Emerson Collective: Emerson Collective (Laurene Powell Jobs) is a multi-vehicle philanthropic organization combining grantmaking, impact investing, and journalism. Comparable to Coefficient in operating pooled funds and providing strategic advisory to high-net-worth donors across education, environment, and immigration.
• Bill & Melinda Gates Foundation: The Gates Foundation is the world's largest private foundation (~$70B endowment) and a major co-funder of Coefficient's Lead Exposure Action Fund. It is a broad incumbent in global health R&D—the same scientific and translational space where Coefficient's Science and Global Health R&D fund operates.
• Ballmer Group: Ballmer Group is a billionaire-led philanthropic investment vehicle (Steve and Connie Ballmer) focused on economic mobility for children and families. Comparable to Coefficient as a billionaire-backed pooled philanthropic platform, though focused on a narrower cause area.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/open_phil
• LinkedInlinkedin.com/company/open-philanthropy-project
• Facebookfacebook.com/openphilanthropy

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments24 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Coefficient Giving