OpenAI just rolled out the full version of GPT 5.5 Cyber, a specialized AI built for cybersecurity. And they're pretty excited about one thing: it beat Anthropic’s Claude Mythos 5 on CyberGym, which is a tough benchmark that tests whether AI can spot known software vulnerabilities. This launch follows a preview version from a few months ago and really shows OpenAI is putting more energy into cybersecurity as a major use case for advanced AI.This new model doesn’t just find basic vulnerabilities. OpenAI says GPT 5.

Anthropic's Claude Sonnet 5 and OpenAI's GPT-5.6 are both rumored for imminent release, setting up a critical head-to-head in the AI mid-tier model wars.

Amid concerns about AI models’ cybersecurity capabilities, OpenAI revealed an improved version of GPT-5.5-Cyber and its “Patch the Planet” initiative to fix open-source software…