Anthropic holds the strongest position at 74% implied probability on the LiveBench Mathematics market for end of October, driven by its September category win with Claude Opus and Fable models that excelled on competition-level and research-grade quantitative problems. LiveBench's dynamic, contamination-resistant questions continue to highlight frontier math capabilities, where Anthropic's recent edge in advanced reasoning benchmarks has translated into trader confidence ahead of the next snapshot. OpenAI and Google trail significantly, reflecting their models' comparatively lower math scores in recent evaluations despite strong overall performance elsewhere. With roughly three weeks until resolution, any new model releases or leaderboard refreshes could introduce volatility, though Anthropic's consistent quantitative results provide the clearest current momentum.