Meta's Muse Wonder (Max) debuts at #12 in Agent Arena, topping Muse Spark 1.3
Arena.ai published results from more than 5,000 real-world agentic sessions showing Meta's Muse Wonder (Max) entering the Agent Arena at #12 with a +6.4% net improvement, 2.8 points and four places above Muse Spark 1.3 (Max) at #16 with +3.6%. The gain comes at a higher price: a $1.13 median cost per task versus $0.54 for Spark 1.3, about 2.1x. Arena describes Muse Wonder (Max) as cost-efficient relative to nearby models — within 1 percentage point of #10 GPT-5.6 Sol (xHigh) at 25% lower cost, and within 2 points of #9 Claude Fable 5 (High) at 67% lower cost. By category it leads Muse Spark 1.3 in Chat (#12, +6.5% vs #15, +3.3%), Work (#13, +6.8% vs #18, +3.7%) and Code (#15, +5.2% vs #18, +4.2%), but in Code Arena: WebDev it placed #15 with 1651 points, slightly below Muse Spark 1.3's #12 and 1659 points, while landing #2 in Text Arena with 1513 points.
It is an early third-party ranking of Muse Wonder on real-world agentic tasks, helping developers weigh its gains against roughly double the per-task cost.