On October 15, 2026 (local time), Meta proudly introduced the Muse Spark Open model, an open-weight AI marvel that it hails as the most robust open-source weight model currently available in the United States. This cutting-edge model boasts a native multimodal architecture, encompassing a staggering 816 billion parameters, with 42 billion actively engaged in processing. It supports an expansive 1 million token context window, making it ideally suited for code construction and agent collaboration tasks. Its prowess shines particularly in tackling long-range assignments, intricate software engineering challenges, and multi-step reasoning scenarios.

Optimized for peak performance on the MLX framework, the Muse Spark Open model demonstrates remarkable efficiency, capable of running locally on desktops with just two Mac Studios. These Mac Studios are powered by Apple M5 Ultra chips and equipped with a substantial 512GB of memory, ensuring smooth and swift operation.

As of today, developers have the opportunity to harness the power of this model through API platforms such as Baseten and Fireworks AI. Additionally, model weights are readily available for download on renowned platforms like Amazon SageMaker AI and Hugging Face, facilitating easy access and integration into various projects.