Google announced Gemini 4 Carbon on October 28, 2026, as its latest frontier large language model with leading scores on the Artificial Analysis Intelligence Index v5.0 and strong gains in cybersecurity benchmarks and long-horizon agentic coding. The company is following a deliberate, phased rollout—starting with a limited group of cyber defenders via the Fairwind Program, expanding gradually to trusted partners, and only then reaching developers, businesses, and consumers “as soon as possible” after guardrail feedback. This mirrors the 13–14-day timeline from Gemini 4 Argon’s late-September announcement to its mid-October broad availability. With no new public updates on expanded access since launch, trader consensus centers on November 10–11 as the most likely window for wider Gemini API or product-surface release, reflecting the compressed cadence Google has established while still allowing time for U.S. voluntary pre-release testing.