Meta’s recent Muse Wonder Full release has driven its leading 33.5% implied probability for the #3 spot on arena.ai’s Text Arena leaderboard (Style Control On) by November 30, capitalizing on strong human-preference performance and competitive positioning against frontier models. Anthropic (24%), Google (21%), and OpenAI (21%) remain tightly clustered due to rapid September-October updates from Claude Opus 5.5, Gemini 4 Argon, and GPT-6 variants, which have narrowed capability gaps across reasoning and style-adjusted benchmarks. The market reflects ongoing volatility in lab rankings, where incremental model improvements, arena-specific filtering, and developer ecosystem momentum can shift third place before resolution. Traders are watching for any late-November releases or leaderboard adjustments that could break the current deadlock among the top four labs.