Anthropic Hires Former California Justice to Lead Global Policy Engagement

Artificial intelligence firm Anthropic announced on Tuesday it has appointed Mariano-Florentino Cuéllar, a former California Supreme Court Justice and recent president of the Carnegie Endowment for International Peace, as its first Chief Global Affairs Officer.

The creation of this senior role highlights the increasing importance for leading AI companies to engage with governments and regulators worldwide as they develop policies for the rapidly advancing technology. Cuéllar will be responsible for overseeing the company's global policy, international engagement, and government relationships.

Navigating a Critical Juncture

The appointment comes as policymakers globally grapple with how to govern the development and deployment of powerful AI models. Anthropic, a key competitor to OpenAI, is positioning itself to be a central voice in these discussions.

"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," Cuéllar said in a statement. His extensive background in law, international affairs, and technology policy is expected to guide Anthropic's strategy in this complex environment.

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An Extensive Background

Cuéllar brings a distinguished career spanning academia, jurisprudence, and public service to the AI startup. His previous roles include:

• President of the Carnegie Endowment for International Peace, a global policy research institution.
• Justice of the Supreme Court of California, where he authored opinions on technology and privacy.
• Director of Stanford’s Freeman Spogli Institute for International Studies.
• Service in the White House and federal agencies across three presidential administrations.
• Co-leader of California’s Frontier AI Working Group.

He has also served as a Trustee of Anthropic’s Long-Term Benefit Trust since January 2026, a role he has now stepped down from to join the company's executive team. Anthropic President Daniela Amodei noted that Cuéllar "has spent his career helping public institutions respond to times of change with thoughtfulness, pragmatism, and deep commitment to the common good."