Dr. Chris Fall has resigned as the director of CAISI, the government body tasked with evaluating frontier AI models, after just three months in the position. This leadership change comes amid ongoing U.S. government efforts to advance security standards for AI under the Trump AI Action Plan. Following Fall’s departure, NIST Director Arvind Raman will take on the role of Acting CAISI Director to ensure continuity in oversight.

CAISI: CAISI is the Center for AI Standards and Innovation, a NIST organization within the Department of Commerce that serves as the primary U.S. government point of contact for industry on testing and research related to commercial AI systems. It develops guidelines for AI security, supports voluntary standards, and evaluates frontier AI models, including those from foreign adversaries, in line with the Trump administration’s AI Action Plan. The news reports the resignation of its director after a brief tenure, after which NIST leadership assumed oversight of the center.
Chris Fall: Dr. Chris Fall is a scientist with prior service in the first Trump administration, including as Director of the Department of Energy’s Office of Science. He was appointed to lead CAISI in April 2026, bringing expertise in scientific leadership and risk mitigation to the federal AI evaluation role. The news indicates he resigned after three months, prompting NIST to name an acting director for CAISI.
Arvind Raman: Dr. Arvind Raman is a Purdue University professor confirmed as the 18th Director of NIST and sworn in on June 30, 2026. He oversees NIST operations and has emphasized U.S. leadership in AI standards development and related technical priorities. The news states that following the CAISI director’s departure, Raman will serve as Acting CAISI Director while continuing in his NIST role.

Federal AI Focus: CAISI continues its mandate to evaluate frontier AI models and advance security standards as part of ongoing U.S. government efforts under the Trump AI Action Plan.
AI Oversight Transition: NIST Director Arvind Raman assumed additional oversight of CAISI immediately following the reported leadership change.