Meta opens weights for Muse Glimmer and announces Muse Spark 1.2 release

Meta has released Muse Glimmer, a 30-billion parameter open weights coding model designed for local execution on a single computer. This multimodal, agentic architecture focuses on high-fidelity code generation and system-level reasoning for software engineering workflows. Additionally, Meta announced the Muse Spark 1.2 release, though its closed API approach may limit open-source collaboration. Following the launch of Muse Glimmer and a new AI vision, Meta shares experienced a rise in the market.