Muse Spark 1.3 scores 61 on AA Index, Meta's fourth release in five months
Scobleizer · x · 2026-09-03
Artificial Analysis evaluated Meta's Muse Spark 1.3, its fourth Muse Spark release in five months.
- Muse Spark 1.3 (max), in limited partner preview, scores 62 on the AA Intelligence Index, behind only Claude Fable 5.1 and Claude Opus 5
- The generally available Muse Spark 1.3 (xhigh) scores 61, tying GPT-5.6 Sol (max) and Grok 4.6 (high)
- Gains of +4 points over Muse Spark 1.2 (57, August) and +8 over 1.1 (53, July), driven mainly by agentic and scientific capabilities
Commentators call the release proof that RL is paying off and that it makes frontier rivals look overpriced.
Related event: Meta Launches Muse Spark 1.3: Near-Frontier Performance at ~1/8 the Price(53 posts)→
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