Anthropic's Fable shutdown is a big moment for open-source AI

Anthropic suspended its Fable 5 and Mythos 5 models to comply with a U.S. export control directive, cutting off access for all customers. The move highlights the risk of relying on proprietary AI, as Microsoft CEO Satya Nadella warned companies against ceding value to a few models. Chinese open-source labs MiniMax and Zhipu surged as developers sought downloadable alternatives.