Google’s mid-October launch of Gemini 4 Argon, now widely available via API and consumer tools, drives the market’s 61.5% implied probability for gemini-4-argon-high. The frontier model leads recent benchmarks in complex coding, multi-step enterprise tasks, finance, legal work, and cybersecurity, with early enterprise feedback highlighting gains in agentic workflows and output quality. Traders view this rollout as shifting competitive positioning ahead of the November 2 resolution. Anthropic’s Claude Opus 5.5 and Fable 5.1-max trail at under 1% each after their September releases, reflecting narrower perceived edges on the same benchmarks despite strong long-horizon agentic performance. With resolution imminent, sentiment favors the most recently validated frontier model.