Google's October 13 release of Gemini 4 Argon, its newest frontier model in the Pro line, has anchored trader consensus that no additional qualifying Pro release will occur by October 31. Argon targets complex, multi-step reasoning in coding, science, and cybersecurity, rolling out first via paid API and Google AI Ultra/Pro access after months of delays on prior plans like Gemini 3.5 Pro. Historical cadence shows flagship Pro updates spaced roughly six to eight months apart, with recent emphasis on Flash variants and phased safety evaluations instead of rapid successive Pro launches. While post-training progress or competitive pressure could accelerate timelines, the absence of any official late-October signals or pre-release benchmarks supports the market's strong positioning on delayed availability.