---
format: "aidr-story-markdown/v1"
id: "499fcbd081b8b35bf4722856fa5b3b40d9b4794609079e10c8914519004d979e"
canonical_url: "https://aidr.today/499fcbd0?lang=en"
title: "Muse Spark Open, the Most Capable US Open‑Weight Model to Date"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-10-15T16:58:30.000Z"
category: "Models"
topics: ["agent"]
source_urls: ["https://research.meta.ai/blog/muse-spark-open","https://news.ycombinator.com/item?id=50106620"]
summary: "Muse Spark Open is the most capable US open-weight model to date and brings leading agentic capabilities to desktop on Apple M5 Ultra Mac Studios."
---

# Muse Spark Open, the Most Capable US Open‑Weight Model to Date

> [Open the canonical story](<https://aidr.today/499fcbd0?lang=en>)

**Published:** 2026-10-15T16:58:30.000Z
**Category:** Models
**Topics:** agent

## Summary

Muse Spark Open is the most capable US open\-weight model to date and brings leading agentic capabilities to desktop on Apple M5 Ultra Mac Studios\.

## Sources

- [Story source](<https://research.meta.ai/blog/muse-spark-open>)
- [Discussion](<https://news.ycombinator.com/item?id=50106620>)