Google’s September 30 announcement of Gemini 4 Argon as its new flagship large language model, initially limited to select cybersecurity partners through the Fairwind Program, is the main factor anchoring the 74.5% market-implied probability of no public release by November 1. The model entered post-training refinement only weeks earlier, with Google emphasizing ongoing safety evaluations, guardrails, and phased access before broader developer or API availability. After skipping the long-delayed Gemini 3.5 Pro entirely, the company has prioritized iterative Flash updates and internal testing rather than rapid public launches, creating trader consensus around a late-year or early-2027 timeline for full Gemini 4 Pro rollout despite DeepMind leadership comments favoring speed.