Anthropic holds the strongest market-implied odds at 60% because its Claude Opus 5.5 and Fable 5.1 large language models have posted top or near-top scores on recent LiveBench releases, including strong results in reasoning, coding, and agentic categories as of early November 2026. OpenAI’s GPT-6 Astra and related variants trail at 26.4% amid solid but slightly lower benchmark placements, while xAI’s Grok 4.7 and other labs remain at single-digit probabilities despite competitive showings on specific LiveBench subsets. With the benchmark refreshed dynamically, traders are pricing in limited time for new model releases or fine-tuning to alter the overall ranking before month-end resolution.