OpenAI announced it will roll out its GPT-5.5 Cyber suite to a select group of "critical cyber defenders" in the coming days, mirroring Anthropic's recent restriction of its Mythos tool. CEO Sam Altman posted on X that access will be granted through an application process that verifies users' credentials and intended use. The move aims to keep the powerful capabilities—penetration testing, vulnerability exploitation, and malware reverse engineering—from falling into the hands of malicious actors while the company consults with the U.S. government on broader availability. Read more →

OpenAI has quietly revamped the ChatGPT interface for Plus, Pro and Business users, placing the model selector—Instant, Thinking and Configure—directly beside the prompt box. The change makes it easier for subscribers to pick the right version of GPT for their tasks, with Instant delivering speed, Thinking offering deeper reasoning, and a hidden Pro tier unlocking the most powerful GPT‑5.5 engine. A new auto‑select switch and an extended thinking mode also appear in the Configure menu, giving users finer control over performance and resource usage. Read more →