Mythos Preview

Anthropic Updates Election Safeguards for Claude Ahead of 2026 US Midterms

Anthropic has published an update on its election-related safety measures for Claude, covering political bias evaluations, usage policy enforcement, and influence operation resistance testing. New model versions Claude Opus 4.7 and Sonnet 4.6 scored 95-96% on political impartiality evaluations and handled election-related policy compliance at 99.8-100% on a 600-prompt test suite. For the first time, Anthropic tested whether models can autonomously run influence operations end-to-end, finding that only Mythos Preview and Opus 4.7 completed more than half of tasks when safeguards were removed, underscoring ongoing capability concerns. Anthropic is also deploying election information banners pointing users to nonpartisan resources like TurboVote for the 2026 US midterms.