OpenAI expands Trusted Access for Cyber program with new GPT 5.4 Cyber model

A new cybersecurity-focused variant of ChatGPT and an expanded access program put OpenAI in direct competition with Anthropic's Project Glasswing — and raises fresh questions about who gets to wield the most powerful security AI.

OpenAI said it is expanding its Trusted Access for Cyber program to “thousands of individuals and organizations,” who will use the company’s technology to root out bugs and vulnerabilities in their products.

The program will also incorporate  GPT 5.4 Cyber, a new variant of ChatGPT that OpenAI says is specifically optimized for cybersecurity tasks. OpenAI’s goal with this release is to make advanced cybersecurity tools more widely accessible.

The company said access to the program and cybersecurity-focused model will still be governed by “strong” Know-Your-Customer and identity verification rules to help prevent the model’s spread to bad actors.

“Our goal is to make these tools as widely available as possible while preventing misuse,” the company said in a blog posted Tuesday. “We design mechanisms which avoid arbitrarily deciding who gets access for legitimate use and who doesn’t.”

OpenAI’s announcement comes one week after Anthropic rolled out Project Glasswing, a similar effort that seeks to provide major tech companies with Claude Mythos, an unreleased model that Anthropic officials have claimed is too dangerous to sell commercially.

OpenAI officials noted they publicly announced Trusted Access for Cyber program months earlier. They have also quietly avoided direct comparisons to Mythos, and GPT 5.4 Cyber.

“We don’t think it’s practical or appropriate to centrally decide who gets to defend themselves,” the blog stated. “Instead, we aim to enable as many legitimate defenders as possible, with access grounded in verification, trust signals, and accountability.”

100-plus companies call for ‘global surge’ in AI-powered cyber defense

OpenAI, Anthropic, Google, Microsoft, and others say there’s a narrow “defenders’ window” to strengthen security before AI-powered attacks become more sophisticated.

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