Meta and Apple Collaborate on Muse Spark Open AI Model for Mac Computers
Meta and Apple have joined forces to launch Muse Spark Open, a groundbreaking AI model featuring 816 billion parameters, optimized for use on Apple’s M5 Ultra Mac Studios. This collaboration allows developers to run the model locally, eliminating the need for cloud infrastructure.
Muse Spark Open is designed for complex tasks such as software engineering and AI workflows, utilizing a mixture of experts architecture to activate only a portion of its parameters during inference. Each M5 Ultra Mac Studio supports up to 512 GB of unified memory, enabling advanced AI workloads across two connected machines.
Meta showcased the model's capabilities through practical applications, including AI agents that assist in software development and video editing tasks. Unlike other AI models that require cloud access, Muse Spark Open can be downloaded and operated on compatible hardware, making it accessible to a wider range of developers.
This partnership marks a notable shift in the relationship between Apple and Meta, who have historically been rivals. The collaboration comes amid increasing competition in the open-weight AI space, with both companies aiming to enhance their technological offerings.
Updated 18:33 UTC
New Facts about Muse Spark Open
- Meta announced Muse Spark Open on October 15, 2026.
- Muse Spark Open is a multimodal model with 816 billion total parameters, of which 42 billion are active.
- The model features a 1M-token context window and can process images, video, and audio inputs.
- It is designed for long-horizon agentic workflows, complex coding, and multi-step reasoning tasks.
- Muse Spark Open supports analyzing entire code repositories and handling complex refactors across multiple files.
- Available through various API platforms and cloud marketplaces since October 15, 2026.
- Teams can download the model weights from Amazon SageMaker and Google Cloud Model Garden.
- Optimized for Apple silicon using the MLX framework, with a reference setup of two M5 Ultra Mac Studios configured as a supercomputer with 1TB of unified memory.
- The model underwent safety post-training, allowing it to operate independently without external guardrails.
- Muse Spark Open is the first open-weight release in the Muse Spark series, previously proprietary.
- It is tested in Arena.ai's Agent Arena and Code Arena, which focus on practical tasks and live scoring.
FAQ
What is Muse Spark Open?
Muse Spark Open is a groundbreaking AI model developed through collaboration between Meta and Apple, featuring 816 billion parameters and optimized for use on Apple’s M5 Ultra Mac Studios.
How does Muse Spark Open benefit developers?
Muse Spark Open allows developers to run the model locally on compatible hardware, eliminating the need for cloud infrastructure and making advanced AI capabilities more accessible.
What types of tasks can Muse Spark Open assist with?
Muse Spark Open is designed for complex tasks such as software engineering and AI workflows, including applications like AI agents for software development and video editing.
What is the significance of the collaboration between Meta and Apple?
This collaboration marks a notable shift in the relationship between Meta and Apple, who have historically been rivals, and reflects a strategic move to enhance their technological offerings in the competitive open-weight AI space.
What hardware is required to run Muse Spark Open?
Muse Spark Open is optimized for Apple’s M5 Ultra Mac Studios, which support up to 512 GB of unified memory, enabling advanced AI workloads across two connected machines.
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