Artificial Analysis (@ArtificialAnlys) benchmarks Meta Muse Spark 1.3: the xhigh variant scores 61 on the Intelligence Index (up 4 from 1.2’s 57), while limited-preview max reaches 62, trailing only Claude Fable/Opus lines. Gains are mainly agentic and scientific; xhigh is the lowest cost-per-task among models at 59+ (~$0.55) at unchanged $1.25/$4.25 per 1M tokens.

Key Takeaways

  • ✓xhigh scores 61; limited-preview max hits 62—up from Muse Spark 1.2’s 57.
  • ✓Agentic gains on Tau3-Bench Banking, Terminal-Bench, and GDPval; max leads Banking-class results.
  • ✓Cost: xhigh ~$0.55/task, lowest among 59+ Index models; 1M context, multimodal, via Meta API / Muse Code.
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Key Decision Metrics at a Glance

TL;DR Verdict
🏆 Benchmark RankRank
xhigh scores 61; limited-preview max hits 62—up from Muse Spark 1.2’s 57.
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💰 Cost & PlansCompare
Muse Spark 1.3 · in: $1.25 / out: $4.25
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🛠️ Ecosystem & IDERules
Cursor Composer (Agent Mode) · Claude Code (Anthropic)
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Up NextArtificial Analysis launches Intelligence Index v5: 60% private test sets, Claude Opus 5.5 leads at 58 and the open-weights gap widens to 12 points
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