Mariano-Florentino (Tino) Cuéllar to join Anthropic as Chief Global Affairs Officer
Mariano-Florentino (Tino) Cuéllar will join Anthropic as its first Chief Global Affairs Officer, leading the company’s work on policy, strategic international engagement, and government relationships worldwide.
Tino’s career spans law, technology, international security, and public institutions at the international, national, and state levels.
He recently stepped down as President of the Carnegie Endowment for International Peace, a leading independent global policy research institution with scholars in 20 countries. Prior to his role at Carnegie, Tino was a Justice of the Supreme Court of California, where his opinions addressed technology and privacy, international agreements, and the separation of powers, among other issues.
He was previously director of Stanford's Freeman Spogli Institute for International Studies, co-director of the university’s Center for International Security and Cooperation, and director of the Stanford Cyber Initiative.
He has served on the President's Intelligence Advisory Board and the US Department of State's Foreign Affairs Policy Board, and worked in the White House and federal agencies in three presidential administrations. The National Academy of Sciences appointed him to its Committee on Responsible Computing Research.
In recent years, he also co-chaired the bipartisan Task Force on Nuclear Proliferation and American Security, co-led California’s Frontier AI Working Group, and served as board chair and later director of the Center for Advanced Study in the Behavioral Sciences.
Currently, he is the Cameron Schrier Family Professor at Stanford Law School, where he started his teaching career before serving in the judiciary and began organizing classes on artificial intelligence nearly a decade ago. He also serves as Senior Fellow at Stanford’s Institute for Human-Centered Artificial Intelligence. Tino has served as a Trustee of Anthropic's Long-Term Benefit Trust since January 2026.
He has stepped down from the Trust to join the company. The Trust will select a successor under its normal process. “Policymakers in the US and around the world are increasingly realizing that we are at a critical inflection point when it comes to how we govern and develop artificial intelligence.
The choices we make today will determine whether humanity can harness extraordinary possibilities to advance science and improve lives across the world or face enormous risk and growing inequality,” said Cuéllar. “Democracies must set the terms on which this technology advances, and there is no more consequential place to be shaping that work right now than Anthropic.”
“Tino has spent his career helping public institutions respond to times of change with thoughtfulness, pragmatism, and deep commitment to the common good,” said Daniela Amodei. “At all levels of government, the law, and academia, Tino has served with sound judgment and civic-mindedness, and we’re looking forward to him putting these principles to work at Anthropic.
I can't think of anyone better prepared to partner with governments, civil society, and community groups as they engage with both the risks and opportunities presented by advanced AI.” Tino arrives at a pivotal moment for Anthropic's work with governments around the world. The questions AI raises for economies, for security, and for communities absorbing rapid change are being debated by leaders everywhere.
Ensuring AI’s trajectory is shaped by democratic societies and its benefits reach people broadly is a critical priority. Tino will help steer this work while finding common cause with heads of state and policy leaders on the questions and possibilities AI is raising for communities everywhere.