Meta resets its AI strategy with new open-weight models and a Zuckerberg essay

Meta announced a renewed focus on open-weight large language models, releasing a new model called Muse Glimmer and promising 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, positioning Meta against rivals like OpenAI and Anthropic, which rely on proprietary models and have lobbied against Chinese labs' open-weight and distillation work. The moves represent another attempt to reboot Meta's struggling AI strategy.