Mythos complicates the breakup, says Pentagon CTO, but Anthropic is still barred

OpenAI locks GPT-5.5-Cyber behind velvet rope despite slamming Anthropic for doing exactly that

After dissing Anthropic for limiting Mythos, OpenAI restricts access to Cyber, too

Anthropic's new Claude Security tool scans your codebase for flaws - and helps you decide what to fix first