Documentation 2026-08-27 21:01 UTC to 2026-08-28 23:02 UTC

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3> For the complete documentation index, see [llms.txt](https://learn.chatgpt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL.3> For the complete documentation index, see [llms.txt](https://learn.chatgpt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL.

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5OpenAI Daybreak helps approved users perform authorized defensive cybersecurity work. Daybreak Blue provides access to frontier models with reduced refusals for authorized defensive workflows. Daybreak Red provides separately approved access to specialist cyber models for more advanced security research.5OpenAI Daybreak helps approved users perform authorized defensive cybersecurity work. Daybreak Blue provides access to flagship models with reduced refusals for authorized defensive workflows. Daybreak Red provides separately approved access to specialist cyber models for more advanced security research.

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7Combine your approved model with a controlled environment, clear limits on approved systems and actions, least-privilege permissions, and automatic review before sensitive actions run. Use the model only with the approved identity, workspace or API organization and project, and product surface.7Combine your approved model with a controlled environment, clear limits on approved systems and actions, least-privilege permissions, and automatic review before sensitive actions run. Use the model only with the approved identity, workspace or API organization and project, and product surface.

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9## Choose the right model9## Choose the right model

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11Start with **GPT-Daybreak-Blue** for most authorized defensive work. This model provides access to frontier capabilities with reduced refusals for defensive security workflows, including:11Start with **GPT-Daybreak-Blue** for most authorized defensive work. This model provides access to advanced capabilities with reduced refusals for defensive security workflows, including:

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13- Vulnerability discovery and triage.13- Vulnerability discovery and triage.

14- Secure code review and threat modeling.14- Secure code review and threat modeling.

369 slug="gpt-5.5"369 slug="gpt-5.5"

370 imageLabel="5.5"370 imageLabel="5.5"

371 wallpaperUrl="/images/api/models/gpt-5.5.jpg"371 wallpaperUrl="/images/api/models/gpt-5.5.jpg"

372 description="Previous-generation frontier model for complex coding, computer use, knowledge work, and research workflows."372 description="Previous-generation flagship model for complex coding, computer use, knowledge work, and research workflows."

373 data={{373 data={{

374 features: [374 features: [

375 {375 {

404 slug="gpt-5.4"404 slug="gpt-5.4"

405 imageLabel="5.4"405 imageLabel="5.4"

406 wallpaperUrl="/images/api/models/gpt-5.4.jpg"406 wallpaperUrl="/images/api/models/gpt-5.4.jpg"

407 description="Frontier model for professional work with strong coding, reasoning, tool use, and agentic workflow capabilities."407 description="Flagship model for professional work with strong coding, reasoning, tool use, and agentic workflow capabilities."

408 data={{408 data={{

409 features: [409 features: [

410 {410 {