---
title: "Muse Spark 1.3 with max reasoning, in limited preview for partners, scores 62 on the Artificial Analysis Intelligence Index, behind only Fable 5.1 and Opus 5 (@artificialanlys)"
type: signal
url: https://frontiernewswire.com/s/muse-spark-1-3-with-max-reasoning-in-limited-preview-for-partners-904c8565
published: 2026-09-02T21:10:01.000Z
byline: "Source: TECHMEME"
---

# Muse Spark 1.3 with max reasoning, in limited preview for partners, scores 62 on the Artificial Analysis Intelligence Index, behind only Fable 5.1 and Opus 5 (@artificialanlys)

Source: TECHMEME · Published 2026-09-02 · Canonical: https://frontiernewswire.com/s/muse-spark-1-3-with-max-reasoning-in-limited-preview-for-partners-904c8565

@artificialanlys : Muse Spark 1.3 with max reasoning, in limited preview for partners, scores 62 on the Artificial Analysis Intelligence Index, behind only Fable 5.1 and Opus 5 — Meta has released Muse Spark 1.3, their fourth Muse Spark model release in five months. Muse Spark 1.3 (max), which is in limited preview for Meta's partners, scores 62 on the Artificial Analysis Intelligence Index, behind only Claude Fable 5.1 and Claude Opus 5. The variant available now, Muse Spa...

In this story: [Artificial Analysis](https://frontiernewswire.com/companies/artificial-analysis), [Claude Opus 5](https://frontiernewswire.com/models/claude-opus-5), [Claude Fable 5.1](https://frontiernewswire.com/models/claude-fable-5-1), [Muse Spark 1.3](https://frontiernewswire.com/models/muse-spark-1-3)

## Sources

- [Read the original at TECHMEME](https://www.techmeme.com/260902/p42#a260902p42)

## Related on Frontier

- [Claude Platform release notes — November 3, 2026](https://frontiernewswire.com/s/claude-platform-release-notes-november-3-2026-f4be554e)
- [Claude Platform release notes — November 2, 2026](https://frontiernewswire.com/s/claude-platform-release-notes-november-2-2026-f2869148)

---

[More Latest Signal](https://frontiernewswire.com/) · [Signals](https://frontiernewswire.com/verified-reporting)