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Meta Releases Muse Spark Open Model, Optimized for Apple M5 Ultra Mac Studio

On October 15, 2026, Meta released Muse Spark Open, an open-weight AI model with 816 billion parameters, after working with Apple to let it run locally on paired M5 Ultra Mac Studio computers.

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Oct 17, 12:58 PM thenextweb.com Apple and Meta team up to run Meta’s Muse Spark Open model on Macs
Oct 17, 6:17 AM thestreet.com Apple's new CEO just teamed up with Tim Cook's old rival
Oct 16, 8:46 AM cnet.com Surprise! Meta and Apple Worked Together on a New Open-Source AI Model
Oct 16, 7:37 AM fastcompany.com Meta and Apple agree on at least one thing: Open-weight AI is cool
Oct 16, 5:30 AM qz.com Meta and Apple are partnering to run an open 816B-parameter AI model on Mac Studios
Oct 16, 4:29 AM semafor.com Apple and Meta to collaborate on new AI model
Oct 15, 9:02 PM businessinsider.com What's on Zuck's desk? We pushed Muse to figure it out.
Oct 15, 5:34 PM theguardian.com Meta releases Muse Spark Open, a new ‘open-weight’ AI model
Oct 15, 4:00 PM straitstimes.com Meta unveils new ‘open’ AI model to rival Chinese competition
Oct 15, 1:55 PM mashable.com Apple and Meta are getting along, and the new Muse Spark Open model brought them together
Oct 15, 1:38 PM washingtontimes.com Meta releases massive AI model that doesn't need data center
Oct 15, 1:04 PM techcrunch.com Meta launches an open-weight model that runs on Macs
Oct 15, 1:00 PM ft.com Meta and Apple team up on AI model tailored for Mac computers
Oct 15, 11:49 AM appleinsider.com Unlikely Apple & Meta team-up brings powerful & local AI to Mac Studio
Oct 15, 11:15 AM theverge.com Meta and Apple team up to make Muse AI models run better on Macs
Oct 15, 11:02 AM thenextweb.com Meta opens a weaker AI model while keeping the frontier closed
Oct 15, 10:47 AM macrumors.com Meta and Apple Bring Muse Spark Open AI Model to Mac Studio
Oct 15, 10:25 AM techmeme.com Alexandr Wang says ex-Apple exec Daniel Gross, now at Meta, helped bring Meta and Apple together: "we're excited for mommy and daddy to be playing nice again" (Ina Fried/Axios)
Oct 15, 10:20 AM techmeme.com Meta says it worked with Apple to make Muse Spark Open run locally on M5 Ultra Mac Studios, letting users pair two to four Studios to code or do agentic work (CNBC)
Oct 15, 10:20 AM qz.com Meta and Apple are partnering to run an open-weight AI model on Mac Studio computers
Oct 15, 10:10 AM techmeme.com Meta releases Muse Spark Open, saying it is the most capable US open-weight model, with 816B total and 42B active parameters and a 1M-token context window (Meta AI Research)
Oct 15, 10:02 AM engadget.com Meta built a huge open-weight AI model for Macs, but you'll need 1TB of RAM to run it
Oct 15, 10:00 AM axios.com "Mommy and daddy" play nice: Apple and Meta team up to bring open-source Muse to Macs
Oct 15, 10:00 AM cnbc.com Apple and Meta team up to make Muse AI model run on Mac computers
Oct 15, 10:00 AM bloomberg.com Meta Releases Open AI Model While Keeping Its Best Tech Closed
Oct 15, 10:00 AM 9to5mac.com Meta launches new Muse Spark Open model, optimized to run on Mac Studio
Oct 14, 5:00 PM huggingface.co Welcome Muse Spark Open: open-weight frontier multimodal mixture-of-experts model from Meta