Meta Swings Back to Open Weights With Muse Glimmer
Meta is reshuffling how it builds artificial intelligence once more, and this round the pitch is openness. The company says its large language models will now center on open weights, and it paired that message with something concrete: a freely available model named Muse Glimmer, plus a promise to publish the weights for its stronger system, Muse Spark 1.2, over the coming weeks. Chief executive Mark Zuckerberg wrapped the shift in an essay that runs past 6,000 words, setting out how he believes AI systems should be built and governed from here. Part of the piece reads as a jab at rivals. OpenAI and Anthropic keep their models proprietary, and both have lobbied Washington for cover against two things they treat as threats: large-scale distillation, in which one model trains another, and the open-weight systems pouring out of Chinese labs. Meta is choosing the other side of that line. ...