OpenAI launches most capable GPT model after delayed rollout

OpenAI has publicly launched GPT-5.6, its most advanced AI model, following a delay last month prompted by US government requests over heightened national security concerns about the potential misuse of powerful AI technologies.

The United States is in a race to develop cutting-edge AI models the likes of which, experts have said, could dramatically accelerate sophisticated cyberattacks in sectors relying on complex, interconnected and often decades-old technology systems....