OpenAI Issues ‘GPT-5.5-Cyber’, with Capabilities Similar to Mythos and Fable 5

Source Summary

IBL News | New York OpenAI launched the full version of GPT-5.5-Cyber this week, a model designed to hunt down and patch software vulnerabilities, with capabilities similar to those of Anthropic’s Mythos and Fable 5. However, OpenAI’s cyber model never drew a ban. Researchers say the same vulnerability-hunting runs in GPT-5.5, Claude Opus, and other models. [...]