OpenAI Launches GPT-5.4-Cyber for Cybersecurity

Source: Reuters

OpenAI on Tuesday unveiled GPT-5.4-Cyber, a variant of its latest flagship model fine-tuned specifically ​for defensive cybersecurity work, following rival Anthropic’s ‌announcement of frontier AI model Mythos.

Mythos, announced on April 7, is being deployed as part of Anthropic’s “Project ​Glasswing“, a controlled initiative under which select ​organizations are permitted to use the unreleased ⁠Claude Mythos Preview model for defensive cybersecurity purposes. ​It has found “thousands” of major vulnerabilities in operating ​systems, web browsers and other software.

OpenAI, creator of popular chatbot ChatGPT, said that GPT-5.4-Cyber will initially be rolled ​out on a limited basis to vetted ​security vendors, organizations and researchers because of its more permissive ‌design.

The ⁠company is also expanding its Trusted Access for Cyber program to thousands of verified individual defenders and hundreds of teams protecting critical software, ​it said in ​a ⁠post on its website.

OpenAI is adding new tiers to its TAC program, ​which was launched in February, with ​higher levels ⁠of verification unlocking more powerful capabilities.

Users approved for the highest tier will gain access to GPT-5.4-Cyber, ⁠which ​has fewer restrictions on ​sensitive cybersecurity tasks such as vulnerability research and analysis.

Read the original story at Reuters.

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