Mistral Large 4, an open-weight model trained in Europe, owned the day and framed the bigger question: who controls the AI other people run. The same thread runs through OpenAI publishing machine-made mathematics, a mega media merger clearing its last legal hurdle, and a privacy fiasco at Meta.

A four-page math statement and a 10,000-agent proof put verifiability in the spotlight, while TVs, CDNs, wikis, and office software each test who holds control when capability gets faster, cheaper, and more concentrated.