Google Announces Gemini 4 Argon With Limited Rollout for Coding, Knowledge Work and Cyber Defense

Google announced Gemini 4 Argon on September 30, 2026, as a new frontier model for complex, long-running workflows in software engineering, enterprise knowledge work and defensive cybersecurity, but it is not getting a broad public launch yet. The company says Argon is first rolling out to trusted cyber defenders through the Fairwind Program while Google participates in the U.S. government's voluntary pre-release access process and expands access gradually.