What changed: OpenAI's API changelog announced the GPT-6-Cyber model, used to investigate vulnerabilities, reproduce them in an authorized test environment, and verify fixes; a Daybreak setup step must be completed before the first request.
Who is affected
Source doesn't specify; described as a model addition covering OpenAI API users generally.
What it means for your business
For businesses using the OpenAI API, this means they can now use GPT-6-Cyber to investigate and verify security vulnerabilities within an authorized test environment.
What to do
Complete the Daybreak setup before sending your first request; use GPT-6-Cyber only in authorized test environments.
When it takes effect
Source gives no separate effective date; the feature was announced in the OpenAI API changelog dated November 5, 2026.
Source: https://developers.openai.com/api/docs/changelog#2026-11-05
