https://winbuzzer.com/2026/06/25/openai-says-gpt-55-cyber-leads-mythos-as-daybreak-expands-xcxwbn/
OpenAI has expanded its Daybreak-initiative with GPT-5.5-Cyber, patching tools, and human review for verified defenders while claiming a CyberGym lead over Mythos 5 in tests.
#AI #GPT55Cyber #OpenAI #PatchThePlanet #Mythos5 #AIModels #AISecurity #Cybersecurity

