AI model
Updated Oct 20, 2026
Meta Muse Spark Open and Muse Code
Muse Spark Open is Meta's new open-weight AI model, released on October 15, 2026 alongside Muse Code, an AI coding terminal. Meta says it is designed to run locally on Apple computers.
- From
- Meta
- Launched
- Oct 15, 2026
- Price
- Not stated
What it does
- Muse Spark Open is a multimodal model aimed at complex coding and agentic work.
- It is reported at 816 billion parameters with a 1 million token context window.
- Muse Code is a coding terminal that Meta paired with the model for agentic and coding workflows.
- Meta showed the pair working on a Mastodon client (bug fixes, new features and a full build) and in DaVinci Resolve, where it reviewed and cropped footage.
Who it is for
Developers and researchers with high-end hardware who want an open-weight model they can run themselves, and teams comparing model options through hosted APIs.
Price and availability
Price
Not stated in the launch coverage.
Availability
- Reported as available now through several API platforms, which the article does not name.
- Running it locally is reported to need at least 1 TB of RAM, with best performance expected on a Mac Studio with an M5 Ultra chip.
Worth knowing before you try it
Check these first
- Meta says the model outperforms other popular open-weight models. That is Meta's own evaluation, and the coverage does not independently verify it.
- The local hardware requirement is very high, so most people will use it through a hosted API rather than on their own machine.
- The licence terms were not stated in the coverage we read. Check them before you build a product on it.
- We have not tested this model ourselves.
Questions people ask
What does open-weight mean?
The model's weights are published so others can run and adapt it. Licence terms still apply and differ between models.
Can I run it on my laptop?
Probably not. Coverage reports a requirement of at least 1 TB of RAM, with best performance expected on a top-end Mac Studio.
What is Muse Code?
An AI coding terminal that Meta released alongside the model for agentic and coding workflows.
Sources
This profile is based on the reporting below. Read the full story there.
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All About AI is independent. We summarize public reporting and link to it.