The White House and six AI developers signed a voluntary safety accord with no enforcement, while Anthropic warned that an open-weight Chinese model is close to Mythos-class exploit ability. OpenAI also scrapped a model over safety concerns and fired three safety researchers in the same week.
Anthropic raised its own catastrophic-misalignment risk rating and disclosed a biosafety lapse, while OpenAI paused its next model over cyber capabilities it ‘cannot rule out’ are critical — two labs’ own frameworks triggering real brakes in the same week. Around that: joint US-UK testing found a Chinese open-weight model can still complete a full cyberattack chain, Black Hat researchers described criminals turning to open-weight models to lower their barriers to entry, and OpenAI armed vetted defenders with a purpose-built exploit-development model.
Over 1,100 employees at OpenAI, Anthropic, Google DeepMind, and Meta signed a letter asking Washington to build the tools for a coordinated AI slowdown, hours before Anthropic’s held-back model broke a NIST post-quantum candidate on its own. Around that, the EU’s AI Act rules for August 2 finally became clear, a Chinese open-weight model rattled markets, and a federal review framework hit its first deadline.