GoKawiilMeta releases 816-billion-parameter open-weight AI model built for Macs
Meta launched Muse Spark Open, which it describes as the most capable open-weight AI model in the US, featuring 816 billion parameters and a 1 million token context window. The model is multimodal, built for coding and agentic tasks, and designed to run locally on Apple hardware, though it requires at least 1 terabyte of RAM and performs best on a Mac Studio with an M5 Ultra chip. Meta paired it with its Muse Code coding terminal and demonstrated it fixing a Mastodon client and editing footage in DaVinci Resolve.
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The steep hardware requirements suggest Meta is targeting power users and developers with high-end Mac Studios rather than everyday consumers, which could limit near-term adoption despite the open-weight label. By releasing the model openly rather than as a closed system, Meta may be positioning itself against rivals like OpenAI and Anthropic by appealing to developers who value transparency, customization, and lower long-term costs. The emphasis on agentic coding and local operation hints at a broader industry push toward AI tools that can run privately on personal hardware rather than relying on cloud APIs.
- Muse Spark Open has 816 billion parameters and a 1 million token context window.
- Running it locally requires at least 1TB of RAM, ideally on a Mac Studio with an M5 Ultra chip.
- Meta paired the model with its Muse Code tool to demonstrate coding fixes and video editing tasks.
Apple Mac Studio (M-series) — If you want to actually run heavyweight local AI models like Muse Spark Open, a Mac Studio with massive unified memory is the kind of machine built for the job. It's Apple's top desktop for demanding workloads like AI inference, coding agents, and multimodal processing right on your desk.”,
See Apple Mac Studio (M-series) on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: techcrunch.com — Lucas Ropek, 2026-10-15
Published there as: “Meta launches an open-weight AI model that runs on Macs”
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