Meta has unveiled Muse Spark Open, an 816B-parameter open-weight multimodal model optimized for the M5 Ultra Mac Studio. The model supports on-device agentic coding and reasoning workflows through Apple’s MLX framework.
Correction (Oct 15): An earlier version said Meta built Muse Spark Open on Apple's MLX framework. Meta optimized the model to run on Apple silicon using MLX; the model was not built on MLX. Evidence: Meta AI Research https://research.meta.ai/blog/muse-spark-open and https://x.com/AIatMeta/status/2110779756828557356
Meta states the model excels at long-horizon tasks, complex software engineering, and multi-step reasoning.
The company says two Mac Studios with M5 Ultra chips together provide a terabyte of unified memory and 1.2 TB/s bandwidth per machine, allowing the full model to run locally.
Tap a lens to see what this story means for you.
Liked this? The Brief brings you the whole day in tech, verified, every morning.
Two minutes, free forever. What's in The Brief →
See what’s happening right now
The Feed runs all day — short, verified briefs the moment they break.
Open the FeedFollow @thecircuitry_
Every story we publish, as it happens. No noise between.
Reader-supported
The Circuitry is a passion project I've always wanted to build, and I love the work behind it.
Running it costs real money. APIs, hosting, time. To keep improving the site and growing this into something useful for everyone, those costs have to be covered.
Any contribution is appreciated. If not, no pressure. Thanks for reading.
Cohere announced the initial close of a Series E round targeting up to CAD $7 billion, which would value Cohere at CAD $35.7 billion if fully raised. The companies of Schwarz Group lead the round. Cohere calls it the largest private raise by a Canadian tech company.
Alphabet reportedly raised about $41.4 billion through stock sales and debt in the third quarter to fund AI-related capital spending. The moves supported $51.355 billion in capex while Google Cloud revenue grew 103 percent year over year.
Marvell is in advanced talks to acquire optics maker Lumentum, Bloomberg News reported Oct 28, citing people familiar, and a source told Reuters the same. A deal could be announced as soon as next week, though talks are private and no agreement has been reached. Lumentum rose about 9% after hours and Marvell fell more than 8%, per Reuters.
Samsung reported record third-quarter operating profit of 107.4 trillion won and said it is the world's first tech company to exceed 100 trillion won in quarterly operating profit. Its chip division earned 106.5 trillion won of that, and Samsung said on its call it expects 2027 results to surpass 2026.
Artificial Analysis ranks Google's Gemini 4 Carbon first on its Intelligence Index v5.0, 59 to 58 over Claude Opus 5.5 (Max), but access is limited to a subset of cyber defenders via Google's Fairwind Program this week, with no general availability date.
