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Meta has launched Muse Spark Open, a new open-weight artificial intelligence model built for coding, software development and complex, multi-step tasks. The model was announced on 16 October, days after the company unveiled its flagship Muse Wonder models.
Muse Spark Open is said to have hundreds of billions of parameters, the internal settings that shape how an AI model behaves, and a context window large enough to handle long documents and large codebases. That combination is aimed at developers who want a model that can follow a task across many steps, keep track of what has already been done, and work with large amounts of material at once.
Meta has partnered with Apple to bring the model to Mac Studio desktops powered by the M5 Ultra chip. The idea is that developers can run large models locally on a powerful desktop, rather than sending their code and data to a remote server. That matters for teams working with sensitive material, and for those who want fast responses without depending on an internet connection. Meta said the model was built to be genuinely open, with weights that outside developers can download and run, and it announced a partnership with Apple to run the model on Mac Studio computers powered by the M5 Ultra chip.
The launch is part of a wider move by Meta to offer open models alongside its most advanced systems. Open-weight models can be downloaded, studied and adapted by outside developers, which has helped Meta build a community around its earlier releases. It also puts pressure on rivals, because a capable open model gives smaller companies and researchers a strong starting point without paying for access to a closed system.
For developers, the practical test will be how Muse Spark Open performs on real coding work compared with the leading closed models. Meta's bet is that openness, combined with the ability to run on Apple hardware, will be enough to win over teams that value control over their tools.
Source: Hugging Face
