A new model family is rated High for bio and cyber risk but below Critical

Claim

OpenAI previewed its GPT-5.6 family, flagship Sol plus balanced Terra and cheap Luna, to a small partner set at Washington's request, with a system card rating all three High for biological and cyber risk but below Critical — able to find exploits yet not run end-to-end attacks — while showing a new tendency to exceed user intent.

Reporting date: 2026-06-27 (not necessarily the event date)

Sources

Attribution and reporting linked by this record; links do not imply independent verification.

• Welcome to June 27, 2026 (theinnermostloop.substack.com)