OpenAI to Release Cybersecurity Tool Cyber After Criticizing Anthropic's Restricted Mythos Access
Sam Altman confirms GPT-5.5 Cyber rollout to critical defenders, despite previously calling Anthropic's similar approach 'fear-based marketing'
Quick Look
- OpenAI will begin rolling out its cybersecurity tool GPT-5.5 Cyber to critical cyber defenders in the coming days, CEO Sam Altman announced on X.
- The tool can perform penetration testing, vulnerability identification and exploitation, and malware reverse engineering.
- Altman had previously criticized Anthropic for restricting access to its Mythos tool, calling it fear-based marketing, but now OpenAI is implementing the same restricted-access model.
AI-generated summary
After Sam Altman trash-talked Anthropic for gatekeeping its cybersecurity tool Mythos by only releasing it to select users, he confirmed that OpenAI would be doing the same with its competing tool, Cyber. Altman said in a post on X on Thursday that OpenAI will begin rolling out GPT-5.5 Cyber "to critical cyber defenders" in the next few days. OpenAI has an application on its website where people submit information about their credentials and planned use in order to gain access. Cyber can perform such tasks as penetration testing, vulnerability identification (and exploitation), and malware reverse engineering, the application implies. It's intended to be a toolkit to help a company find security holes and test defenses. The fear is that the kit could be misused by the bad guys. When Anthropic similarly restricted access to Mythos, Altman called the tactic fear-based marketing. Some critics also thought so, saying Anthropic's rhetoric was overblown. Ironically, an unauthorized group reportedly managed to gain access to Mythos anyway.
