technologyreview.com, as data

## Featured Story### A startup claims it broke through a bottleneck that’s holding back LLMsSubquadratic has now shared more details about its new model. But some are still skeptical.### The “steroid olympics” were a circus—and a window into our cultureDozens of athletes on performance-enhancing drugs competed in the Enhanced Games. Organizers hope it'll sell a lot of peptides and other supplements.### Sperm donors need limits, says a European fertility groupSome donor-conceived people are finding hundreds of siblings. An international cap on donations could help prevent that.### Inside interoception: The hidden sense of how you feel insideResearchers are decoding how signals move between body and brain, with implications for how we understand and treat conditions from obesity to anxiety.### Anthropic found a hidden space where Claude puzzles over conceptsA new technique has let the company probe deeper than ever into the weird workings of an LLM.### Claude Science is Anthropic’s newest flagship productThe company is doubling down on AI for science.### Four nuclear reactors hit a big milestone in the USAchieving criticality is just the first step toward power for the grid.### IBM has unveiled chip technology that could help extend Moore’s Law another decadeThe company, along with others, is pursuing a new paradigm for cramming more transistors on chips—building up.### Google DeepMind is worried about what will happen when millions of agents start to interact onlineThe firm is calling for more scientists to study the risks of multi-agent systems.### AI agents are not your “coworkers”Marketing AI agents as digital employees may make human workers worse at spotting errors and more likely to offload accountability.## Features### China’s AI models have Trump’s AI world at war with itselfKimi and other free models from China have again been seen as a wake-up call. But for what?