Meta released Muse Glimmer, a 30-billion-parameter AI model designed to run on personal laptops and notebooks, available free under Apache 2.0 license on Hugging Face. The bigger announcement is open-sourcing Muse Spark 1.2 weights—Meta's most powerful model—directly competing with closed-model approaches from OpenAI and Anthropic, while countering China's open-weight AI models (DeepSeek, Alibaba). On-device processing via quantization (4-bit compression) reduces cloud costs and improves speed; Meta tested compatibility with M4/M5 Max chips and RTX 5090 GPUs. This signals Meta's confidence in its AI infrastructure investment and addresses developer demand for non-Chinese open alternatives.