**Google's October 28 announcement of Gemini 4 Carbon, its latest frontier large language model emphasizing cybersecurity and long-horizon coding capabilities, drives the market's strong 88% implied probability for a November 9–15 release.** Following the pattern of Gemini 4 Argon, which reached general availability roughly two weeks after its launch, traders anticipate phased expansion from the initial Fairwind Program access for select cyber defenders to broader developer and public availability via the Gemini API and products. The model's top ranking on the Artificial Analysis Intelligence Index v5.0 and matching introductory pricing ($2/$10 per million tokens) have reinforced expectations of rapid iteration, though Google has provided no exact timeline beyond “as soon as possible” after guardrail feedback. Upcoming catalysts include any API changelog updates or official statements confirming wider rollout in the coming days.