OpenAI Debuts Daybreak to Counter Anthropic’s Mythos

OpenAI has launched a security program designed to help cyberdefense teams respond to threats sooner.

The company’s Daybreak initiative, announced Monday (May 11), is designed to boost cyberdefenses and “continuously secure software,” as CEO Sam Altman put it.

“AI is already good and about to get super good at cybersecurity; we’d like to start working with as many companies as possible now to help them continuously secure themselves,” Altman wrote on social media platform X.

OpenAI says Daybreak merges its AI model with its coding-focused agentic system Codex to help shorten the time between spotting a vulnerability and remedying it.

In announcing Daybreak, OpenAI notes that artificial intelligence (AI) can now help defenders “reason across codebases,” uncover subtle vulnerabilities, analyze unfamiliar systems, and more quickly shift from discovery to remediation.

“Because those same capabilities can be misused, Daybreak pairs expanded defensive capability with trust, verification, proportional safeguards, and accountability,” the startup added.

The debut of Daybreak is happening as the cybersecurity industry is warning of possible AI-driven attacks following OpenAI rival Anthropic’s launch of its Claude model.

For example, Google cybersecurity researchers issued a report Monday saying they had identified and may have halted the use of the first zero-day exploit developed with AI. However, a spokesperson for Google later told Bloomberg News that the attackers had not used Mythos.

And the International Monetary Fund (IMF) last week called for the creation of new resilience standards to counter the possibility of AI-driven cyberattacks.

In other OpenAI news, the startup on Monday launched a company aimed to help organizations build and deploy AI systems.

The OpenAI Deployment Company is a collaboration between OpenAI and 19 global investment firms, consultancies and system integrators, and is majority-owned and controlled by OpenAI, the company said in a news release.

“AI is becoming capable of doing increasingly meaningful work inside organizations,” OpenAI Chief Revenue Officer Denise Dresser said in the release. “The challenge now is helping companies integrate these systems into the infrastructure and workflows that power their businesses. DeployCo is designed to help organizations bridge that gap and turn AI capability into real operational impact.”

In an interview with CNBC later in the day, Dresser added that deploying AI can be a difficult road for enterprises. While these businesses are adopting the newest models, their CEOs say they struggle to keep up with what Dresser called the “compounded innovation.”