Meta reboots its AI strategy with new open-weight models and a Zuckerberg manifesto

Meta announced a renewed focus on open-weight large language models, releasing a new model called Muse Glimmer and pledging to open the weights of its more powerful Muse Spark 1.2 in the coming weeks. CEO Mark Zuckerberg also published a lengthy essay outlining the company's AI philosophy and governance approach. The move is aimed at differentiating Meta from proprietary developers like OpenAI and Anthropic, which have lobbied for restrictions on distillation and open-weight models from Chinese labs.