Muse Spark 1.3 Max by @AIatMeta has reshaped the Pareto frontier for Code Arena: WebDev! Meta's latest model at Max reasoning is doing something interesting on the Arena Pareto frontier: it's the only model holding down the wide price band between Qwen3.8-max ($5/MToken) and Qwen3.8-Flash-Next ($0.39/MToken). The next closest model to the frontier is Meta's own, Muse Spark 1.3 on xHigh reasoning. Muse Spark 1.3 Max performs just 20 pts lower than Qwen3.8 (Max) while costing 30% less, and 24 pts from Kimi K3 (Max) while costing 70% less. - Muse Spark 1.3 Max: 1650 pts | $3.50/M - Qwen3.8 (Max): 1670 pts | $5/M - Kimi K3 (Max): 1674 pts | $12/M Overall in Code Arena: WebDev, Muse Spark 1.3 Max landed #8#, ahead of Claude Fable 5 at #10# (+22 pts), Grok-4.6 (High) at #12# (+26 pts), and GPT-5.6 Sol at #14# (+33 pts). Congrats to the @AIatMeta team on this release!