Meta unveiled Muse Glimmer, an open-weight AI model that can run on a Mac or PC and announced an upcoming open-weight Muse Spark, while also launching Muse Code, a terminal-based coding agent built on Muse Spark 1.2 with crash-safe persistent sub-agents; the company is promoting open-weight access, competitive pricing, and flexible data-use options as it vies with OpenAI and Anthropic. Separately, a New Mexico court ordered Meta to pay $567 million to address youth harms from Instagram and Facebook, with funds directed to treatment, awareness, and prevention programs.