Anthropic names Tino Cuéllar its first Chief Global Affairs Officer

The former California Supreme Court Justice and Carnegie Endowment president will lead policy, international engagement and government relationships worldwide

Anthropic has named Mariano-Florentino (Tino) Cuéllar as its first Chief Global Affairs Officer.

Anthropic is putting a former California Supreme Court Justice at the head of its global policy work, with Mariano-Florentino (Tino) Cuéllar set to join the AI company as its first Chief Global Affairs Officer.

Cuéllar will oversee policy, strategic international engagement and relationships with governments worldwide. The newly created role gives one executive responsibility for working with public institutions as political leaders consider the economic, security and societal questions surrounding advanced AI.

He is not joining Anthropic as an outsider. Cuéllar has served as a Trustee of the company’s Long-Term Benefit Trust since January 2026, although he has now stepped down from the Trust to take the executive position.

Cuéllar frames the role around the decisions governments are making about AI development: “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. 

“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.”

A career spanning courts, government and academia

Cuéllar recently stepped down as President of the Carnegie Endowment for International Peace, a global policy research institution with scholars in 20 countries. His work there followed service on the Supreme Court of California, where his opinions covered areas including technology and privacy, international agreements and the separation of powers.

His federal government experience includes membership of the President’s Intelligence Advisory Board and the US Department of State’s Foreign Affairs Policy Board. He has also worked in the White House and federal agencies across three presidential administrations.

More recently, Cuéllar co-led California’s Frontier AI Working Group. The National Academy of Sciences also appointed him to its Committee on Responsible Computing Research, while his wider security work included co-chairing the bipartisan Task Force on Nuclear Proliferation and American Security.

The academic strand of his career is centered on Stanford University. Cuéllar is the Cameron Schrier Family Professor at Stanford Law School and a Senior Fellow at the Stanford Institute for Human-Centered Artificial Intelligence. He began organizing classes on artificial intelligence nearly a decade ago and has previously directed Stanford’s Freeman Spogli Institute for International Studies and Stanford Cyber Initiative.

Anthropic President Daniela Amodei points to that combination of experience as the reason for the appointment: “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.”