OpenAI to Release Cybersecurity Tool Cyber After Criticizing Anthropic's Restricted Mythos Access
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.