Daybreak: Tools for securing every organization in the world

We’re expanding Daybreak⁠ to help democratize patching vulnerable software at machine speed. For example, we’ve applied our models to discover and generate patches for critical vulnerabilities⁠ in major browsers, network infrastructure, and operating systems such as FreeBSD and the Linux kernel. To scale the impact of these capabilities:

• Codex Security: We’re launching an update to the Codex Security plugin⁠, which implements what we’ve learned from internal and customer usage of our models into a solution to accelerate the process of discovering and patching vulnerabilities in existing systems as well as automatically preventing new vulnerabilities from ever reaching production.

• GPT‑5.5‑Cyber: Following an initial permissive-only preview, we’re launching the full version of GPT‑5.5‑Cyber through our continued limited release to trusted defenders. This model sets new state-of-the-art performance on CyberGym, reaching 85.6% compared with 81.8% for GPT‑5.5.

• Daybreak Cyber Partner Program⁠: Enabling security partners to scale the benefits to more organizations through our most capable models with trusted access in their products and services.

• Patch the Planet⁠: an initiative founded with Trail of Bits in collaboration with HackerOne, Calif, researchers, and maintainers to help widely used open-source projects move from findings to fixes.

  • More than 30 open-source projects have committed to participate, with initial participants including cURL, Go, Python, Sigstore, and pyca/cryptography.

  • With Patch the Planet, we are working with researchers, maintainers, enterprises, and partners to make powerful cyber capability available to defenders with appropriate access, governance, and human oversight. Hear from Clint and Dan about this here⁠(opens in a new window).

Cyber defense at an inflection point

From findings to fixes with Codex Security

This is the scale at which patching must now happen.

Codex Security⁠ on code they own, review the findings, and help land fixes. Security partners and practitioners can use our frontier models to strengthen their defensive tools and bring those capabilities to more organizations quickly.