LMArena says Meta Muse Spark 1.3 (xHigh) lands ~#10 on Code Arena: WebDev with 1623 AutoEval pts, near Claude Fable 5 (#8, 1628) and GPT-5.6 Sol (#11, 1616). That is a large jump from Muse Spark 1.1 (#25, 1540) and 1.2 xHigh (#30, 1534). Scores are early AutoEval and may shift as live human votes arrive.

Key Takeaways

  • ✓WebDev AutoEval ~1623, back in top 10, near Fable 5 and GPT-5.6 Sol.
  • ✓~80+ point jump vs Muse Spark 1.1 / 1.2 xHigh.
  • ✓Early reward-model AutoEval; live human votes may move the rank.
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Up NextLMArena: Meta Muse Spark 1.3 enters Agent/Code Arena; voting open, scores soon
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