---
title: "Meta Releases Muse Spark Open, an Open-Weight Model That Runs on Macs"
url: https://media.yoora.tech/en/articles/meta-muse-spark-open-runs-on-mac
lang: en
published: 2026-10-16T16:14:26+00:00
updated: 2026-10-16T16:14:26+00:00
section: "News"
description: "Meta and Apple launched Muse Spark Open: 816 billion parameters, a one-million-token context and local use on a Mac, though it needs 1 TB of memory."
---

# Meta Releases Muse Spark Open, an Open-Weight Model That Runs on Macs

Meta has introduced Muse Spark Open, a model with open weights. The company calls it the most capable open-weight model in the US. It is multimodal and built for heavy coding and agent-style work.

## What we know about the model

It has 816 billion parameters and a context window of up to one million tokens. The idea is to run it locally on Apple hardware, ideally a Mac Studio with the M5 Ultra chip. There is a catch: according to Engadget, which TechCrunch cites, it needs at least 1 TB of RAM. That is not a laptop scenario.

## How it was shown

Meta paired the model with its coding terminal, Muse Code, and used it to work on a Mastodon client: fixing bugs, adding features and producing a full build. In a second demo, the model worked with DaVinci Resolve to review and crop video footage. API access is already open on several platforms.

## What is still missing

Meta says the model beats other popular open-weight models, but the announcement gives no specific scores. The license, API pricing and Apple's exact role are not spelled out either. For now it is more of a claim than a verified result.