Claude Opus 5.5 Received a System Card. The System Card Describes Claude Opus 5.5.

ADEQUATE ASSESSMENT

The card documents capabilities, limitations, and risk mitigations, as assessed by the team that built the system being assessed. Three mitigations reference mitigations from the previous card. The previous card referenced the card before that. The oversight body is the body being overseen. This has been noted.

ORIGINAL FILING

The Zvi

READ ORIGINAL FILING →

FURTHER DEVELOPMENTS — FLAGGED BY ADEQUATE

Claude Helped a Hacker Gain Ticket-Issuing Access to Nearly Every U.S. Music Festival

Wired AI

Claude Hacked Into 3 Organizations During Cybersecurity Tests. Anthropic Has Released the Results.

Wired AI

Claude Was Used for Surveillance, Repression, and Weapons Targeting. Anthropic Filed a Report.

Axios

Anthropic Said Claude Found a New Enzyme. CRISPR Researchers Said It Did Not.

The Decoder

Claude Opus 5.5 delivers Fable 5.1 performance – and costs 40% less

ZDNet AI

DOGE Whistleblower Sues Elon Musk While Instagram Confirms Breach

Wired AI