What happened
Chris Fall, director of Commerce/NIST's Center for AI Standards and Innovation (CAISI — the successor to the US AI Safety Institute), resigned effective July 20, 2026, after roughly three months in the role. NIST Director Arvind Raman will serve as Acting CAISI Director.
Why it matters
CAISI is the primary federal body conducting voluntary frontier-model capability/risk testing (e.g., its recent GLM-5.2 assessment) and shaping US AI-safety technical standards; leadership instability at this agency raises continuity concerns for the federal AI evaluation and standards pipeline that underpins broader US AI policy.
Action needed
AI labs engaged in voluntary pre-deployment testing with CAISI should monitor for continuity of review processes and any policy shifts under interim leadership.