Open weights vs. closed: An AI civil war's afoot, and the stakes are existential

A dispute has emerged between proponents of open-weight AI models and those favoring proprietary models, with companies like Moonshot AI advancing open-weight models that rival closed systems like Anthropic's Fable 5 and OpenAI's GPT-5.6. This has sparked concerns from US officials about potential intellectual property issues, while major tech firms including Microsoft and Amazon advocate for open weights as beneficial to innovation.