Codex cybersecurity work needs the Daybreak model to avoid safety-guardrail blocks
HankYeomans · x · 2026-09-11
Developer Hank Yeomans shares a practical tip for doing cybersecurity work in Codex: hardening extensions and running adversarial tests on the default model gets repeatedly blocked by safety guardrails.
- The fix is signing up for Daybreak, OpenAI's cybersecurity-focused model.
- Two ways to use it: have Astra orchestrate agents that use Daybreak, or switch directly via /model.
- Switching unlocks an additional model, with a notice that "Daybreak isn't available for Astra. Some cybersecurity requests may still be limited."
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