On September 30, 2026, Google announced Gemini 4 Argon, its new frontier model. Google says it performs strongly on real-world software engineering, enterprise knowledge work such as legal and finance, and cybersecurity defense.
What to know
- Argon is rolling out first to a set of trusted cyber defenders through Google’s Fairwind Program.
- Google says it is prioritising safety and rigorous testing before a wider public release.
- Google highlights a very large context: an industry-leading 1 million token limit for long, multi-step problems.
Where it sits
Gemini 3.5 Flash has been Google’s production model for developers and consumers since May 19, 2026. Argon is a limited rollout, so most people will keep using the 3.5 series for now.
Source: Google blog. We summarise in our own words; check the source for the full details.