Anthropic's Claude models, particularly recent Opus 5.5 and Fable variants, have posted the highest scores on LiveBench coding and agentic coding categories as of late October 2026, driving the 97.1% market-implied probability. These results reflect strong performance on contamination-resistant programming tasks and tool-use benchmarks that reward precise code generation and iterative debugging. Traders appear to view this edge as durable given Anthropic's consistent focus on coding capabilities amid competition from OpenAI and Google releases. A late leaderboard revision or resolution criteria emphasizing a different model variant could still shift the outcome before final tally.