Google leads with a 77.5% market-implied probability of having the best AI model on December 15, reflecting trader consensus around its recent large language model releases, benchmark leadership, and scaling advantages over rivals. Other listed outcomes sit at 50% or lower, with Anthropic at 18.5% and OpenAI at 1.6%, indicating limited momentum for alternatives amid ongoing competitive releases. The tight one-month window to resolution amplifies focus on any final capability demonstrations or third-party evaluations that could shift positioning before the cutoff. Traders appear to price in Google's infrastructure edge and recent model iterations as decisive, while acknowledging that unexpected updates from competitors could still alter outcomes in this fast-moving sector.