Dossier
Trusted Access for Cyber
Coverage of Trusted Access for Cyber in the Nexus archive.
- OpenAI expands access to cyber AI as hacking risks grow
OpenAI is expanding access to its GPT-5.4-Cyber model for defensive cybersecurity tasks while implementing verification controls. The company emphasizes balancing wide availability with preventing misuse, contrasting its approach with Anthropic's more restrictive rollout strategy.
- Anthropic withholds Mythos Preview model because its hacking is too powerful
Anthropic is withholding its Mythos Preview model from public release due to concerns about its advanced hacking capabilities, which can identify and exploit thousands of vulnerabilities. The company is limiting access to selected tech and cybersecurity firms, while OpenAI is developing a similar model through its Trusted Access for Cyber program.