publication

OpenAI announces restricted GPT-6 Cyber availability to approved Daybreak Red defenders

On 5 November 2026 OpenAI introduced cyber-specialized GPT-6 Cyber with restricted access for vetted Daybreak Red users via approved Codex/API pathways. OpenAI internally rates its cyber capabilities Critical and reports ExploitGym 48.5% and RemoteExploitBench 95% in controlled settings. Those are vendor evaluations, not independent capability verification or observed public misuse. This restricted model-access milestone is distinct from the previous canonical November 4 Linux vulnerability-research publication and is not public general availability.