Anthropic says a key AI safety alarm has been triggered, days before its IPO

In an amended prospectus tied to its IPO price range, Anthropic said it has met a Responsible Scaling Policy threshold, based on expected future models and its overall rate of progress rather than observed current models, that is triggered when AI roughly doubles the pace of its model improvements. Crossing the line means more safeguards rather than a shutdown, and the company says humans remain in charge. Anthropic set a price range of $70 to $78 per share, valuing it at as much as about $1.4 trillion, with trading possibly starting as soon as Nov. 19.