# OpenAI Codex adds hidden "Daybreak Blue" and "Daybreak Red" cybersecurity models

> Source: <https://github.com/openai/codex/commit/5bcd7b0fbcefb41d0caa8db1a212ad7d47cf93ab>
> Published: 2026-08-21 16:21:15+00:00

# Commit 5bcd7b0

Refresh bundled model definitions (

## What changed
- Add the hidden Daybreak Blue and Daybreak Red model definitions.
- Refresh model capabilities, instructions, plan availability, and service-tier metadata.
- Configure the auto-review model for Responses Lite and code-mode tools, and update Guardian request tests for the resulting `additional_tools` and developer-message layout.
## Testing
- Update Guardian request snapshots and assertions for initial and follow-up reviews.
- Verify MCP approval routing against the developer-message form of the Guardian prompt.
GitOrigin-RevId: 6680e9abebdcbc43224a81348591e26f8422f3ec[#39770](https://github.com/openai/codex/pull/39770))

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## File tree

- codex-rs
- core
- src/guardian
- snapshots

- tests/suite

- models-manager

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