Google announced Gemini 4 Argon on September 30, 2026, marking the start of its Gemini 4 generation after skipping the long-delayed Gemini 3.5 Pro. The frontier large language model targets complex workflows in coding, enterprise tasks like legal and finance, and cybersecurity defense, with reported leading results on benchmarks such as DeepSWE for long-horizon engineering and Vals Index for economic impact. It launched first to a narrow group of trusted cyber defenders via Google’s Fairwind Program, with phased expansion planned to paid API users and subscribers after further safety testing and U.S. government voluntary pre-release review. This limited rollout amid competitive pressure from OpenAI’s Astra and Anthropic’s Opus models, plus internal use for tasks like codebase migrations, shapes trader views on near-term public availability thresholds.