Anthropic warns that it’s very close to RSI capability, aka self-building AI

In its revised S-1A filing, Anthropic added risk-factor language saying its internal estimates and expectations for future models indicate it may imminently meet its Responsible Scaling Policy definition of "dramatically accelerated progress attributable to AI," though no current model has crossed that threshold. The company said it has already used AI to develop models whose capability leaps it did not recognize at the time, and that it is considering updates to keep humans in control of frontier model development.