Results based on +5K real-world agentic sessions are in: Muse Wonder (Max) by @AIatMeta just landed in the Agent Arena at #12# with +6.4% net improvement. This result is +2.8 pts and four places above Muse Spark 1.3 (Max) at #16# with +3.6%. The added performance of Muse Wonder (Max) comes at a higher price: $1.13 median cost per task vs. $0.54 for Spark 1.3, or about 2.1× the cost. Compared with nearby models in Agent Arena, Muse Wonder (Max) shows cost efficiency: at $1.13/task, it comes within 1 percentage point of #10# GPT-5.6 Sol (xHigh) at 25% lower cost, and within 2pts of #9# Claude Fable 5 (High) at 67% lower cost. By category, Muse Wonder (Max) does better in Chat, Work and Code vs. Muse Spark 1.3: - Chat: #12# (+6.5%) vs. #15# (+3.3%) - Work: #13# (+6.8%) vs. #18# (+3.7%) - Code: #15# (+5.2%) vs. #18# (+4.2%) Congrats to the @AIatMeta team on this release!