Home / Business and Economy / Billionaire Couple's Philanthropy Arm Launches Free Donor Advice
Billionaire Couple's Philanthropy Arm Launches Free Donor Advice
18 Nov, 2025
Summary
- Cari Tuna and Dustin Moskovitz's Open Philanthropy is now Coefficient Giving.
- The organization offers free advice to major donors on impactful giving.
- They focus on global health, AI safety, and effective altruism causes.

Open Philanthropy, co-founded by billionaire Cari Tuna and her husband Dustin Moskovitz, has been renamed Coefficient Giving. This new entity will provide free, expert guidance to significant donors seeking to maximize their philanthropic impact. The initiative aims to formalize and expand advisory services that have been informally offered over the past two years.
Coefficient Giving will leverage its extensive research and experience, having directed over $4 billion in donations. Their focus areas include global health, animal rights, artificial intelligence safety, and the effective altruism community. They seek to guide donors towards high-impact opportunities where their contributions can make a substantial difference.
The organization emphasizes a rigorous, data-driven approach to philanthropy, contrasting with passion-driven giving. Coefficient Giving will particularly assist donors interested in complex or less conventional causes, such as ensuring the safe development of advanced AI systems and mitigating potential existential risks.